{"id":924,"date":"2025-12-31T13:32:17","date_gmt":"2025-12-31T10:02:17","guid":{"rendered":"https:\/\/mathsymbol.ir\/?page_id=924"},"modified":"2026-06-13T17:09:50","modified_gmt":"2026-06-13T13:39:50","slug":"%d8%b1%db%8c%d8%a7%d8%b6%db%8c","status":"publish","type":"page","link":"https:\/\/mathsymbol.ir\/?page_id=924","title":{"rendered":"\u0631\u06cc\u0627\u0636\u06cc"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\n\n\n\n\n\u0686\u06a9\u06cc\u062f\u0647 \u062f\u0631\u0648\u0633 \u0631\u06cc\u0627\u0636\u06cc \u0646\u0647\u0645<\/title>\n<style>\n\/* ===== SCOPED TO WRAPPER ONLY ===== *\/\n#math9-widget * {\n box-sizing: border-box;\n margin: 0;\n padding: 0;\n}\n\n#math9-widget {\n --clr-primary: #6c63ff;\n --clr-secondary: #43d1af;\n --clr-accent: #f7a731;\n --clr-danger: #ff6b6b;\n --clr-text: #1a1a2e;\n --clr-text-light: #4a4a6a;\n --clr-text-muted: #7a7a9a;\n --glass-bg: rgba(255,255,255,0.55);\n --glass-border: rgba(255,255,255,0.75);\n --glass-shadow: 0 8px 32px rgba(108,99,255,0.10), 0 2px 8px rgba(0,0,0,0.06);\n --glass-blur: blur(14px);\n --radius: 18px;\n --radius-sm: 10px;\n --transition: 0.32s cubic-bezier(.4,0,.2,1);\n\n font-family: 'Segoe UI', Tahoma, 'Vazir', 'IRANSans', Arial, sans-serif;\n direction: rtl;\n text-align: right;\n background: transparent;\n padding: 12px 4px 32px 4px;\n max-width: 900px;\n margin: 0 auto;\n color: var(--clr-text);\n isolation: isolate;\n}\n\n\/* ====== HEADER ====== *\/\n#math9-widget .m9-header {\n background: var(--glass-bg);\n backdrop-filter: var(--glass-blur);\n -webkit-backdrop-filter: var(--glass-blur);\n border: 1.5px solid var(--glass-border);\n border-radius: var(--radius);\n box-shadow: var(--glass-shadow);\n padding: 28px 32px 24px 32px;\n margin-bottom: 22px;\n display: flex;\n align-items: center;\n gap: 18px;\n flex-wrap: wrap;\n}\n\n#math9-widget .m9-header-icon {\n width: 58px;\n height: 58px;\n background: linear-gradient(135deg, #6c63ff22 0%, #43d1af22 100%);\n border-radius: 14px;\n display: flex;\n align-items: center;\n justify-content: center;\n flex-shrink: 0;\n border: 1.5px solid rgba(108,99,255,0.18);\n}\n\n#math9-widget .m9-header-text {\n flex: 1;\n min-width: 180px;\n}\n\n#math9-widget .m9-header-text h1 {\n font-size: 1.55rem;\n font-weight: 800;\n color: var(--clr-primary);\n letter-spacing: -0.5px;\n line-height: 1.3;\n}\n\n#math9-widget .m9-header-text p {\n font-size: 0.88rem;\n color: var(--clr-text-muted);\n margin-top: 4px;\n}\n\n\/* ====== PROGRESS CARD ====== *\/\n#math9-widget .m9-progress-card {\n background: var(--glass-bg);\n backdrop-filter: var(--glass-blur);\n -webkit-backdrop-filter: var(--glass-blur);\n border: 1.5px solid var(--glass-border);\n border-radius: var(--radius);\n box-shadow: var(--glass-shadow);\n padding: 22px 28px;\n margin-bottom: 22px;\n display: flex;\n align-items: center;\n gap: 22px;\n flex-wrap: wrap;\n}\n\n#math9-widget .m9-progress-ring-wrap {\n position: relative;\n width: 82px;\n height: 82px;\n flex-shrink: 0;\n}\n\n#math9-widget .m9-progress-ring-wrap svg {\n transform: rotate(-90deg);\n}\n\n#math9-widget .m9-progress-ring-bg {\n fill: none;\n stroke: rgba(108,99,255,0.10);\n stroke-width: 7;\n}\n\n#math9-widget .m9-progress-ring-bar {\n fill: none;\n stroke: url(#m9RingGrad);\n stroke-width: 7;\n stroke-linecap: round;\n transition: stroke-dashoffset var(--transition);\n}\n\n#math9-widget .m9-progress-pct {\n position: absolute;\n inset: 0;\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: 1.15rem;\n font-weight: 800;\n color: var(--clr-primary);\n}\n\n#math9-widget .m9-progress-info {\n flex: 1;\n min-width: 140px;\n}\n\n#math9-widget .m9-progress-info h3 {\n font-size: 1rem;\n font-weight: 700;\n color: var(--clr-text);\n margin-bottom: 6px;\n}\n\n#math9-widget .m9-progress-bar-wrap {\n background: rgba(108,99,255,0.10);\n border-radius: 99px;\n height: 9px;\n overflow: hidden;\n margin-bottom: 7px;\n}\n\n#math9-widget .m9-progress-bar-fill {\n height: 100%;\n border-radius: 99px;\n background: linear-gradient(90deg, #6c63ff, #43d1af);\n transition: width var(--transition);\n}\n\n#math9-widget .m9-progress-label {\n font-size: 0.8rem;\n color: var(--clr-text-muted);\n}\n\n#math9-widget .m9-reset-btn {\n background: rgba(255,107,107,0.10);\n border: 1.5px solid rgba(255,107,107,0.28);\n color: var(--clr-danger);\n border-radius: var(--radius-sm);\n padding: 8px 16px;\n font-size: 0.82rem;\n font-weight: 700;\n cursor: pointer;\n transition: background var(--transition), transform var(--transition);\n display: flex;\n align-items: center;\n gap: 6px;\n white-space: nowrap;\n font-family: inherit;\n}\n\n#math9-widget .m9-reset-btn:hover {\n background: rgba(255,107,107,0.20);\n transform: scale(1.04);\n}\n\n\/* ====== CHAPTER LABEL ====== *\/\n#math9-widget .m9-section-label {\n font-size: 0.78rem;\n font-weight: 700;\n text-transform: uppercase;\n letter-spacing: 1.5px;\n color: var(--clr-text-muted);\n padding: 0 4px;\n margin: 22px 0 10px 0;\n display: flex;\n align-items: center;\n gap: 8px;\n}\n\n#math9-widget .m9-section-label::after {\n content: '';\n flex: 1;\n height: 1px;\n background: rgba(108,99,255,0.13);\n border-radius: 99px;\n}\n\n\/* ====== ACCORDION CARD ====== *\/\n#math9-widget .m9-card {\n background: var(--glass-bg);\n backdrop-filter: var(--glass-blur);\n -webkit-backdrop-filter: var(--glass-blur);\n border: 1.5px solid var(--glass-border);\n border-radius: var(--radius);\n box-shadow: var(--glass-shadow);\n margin-bottom: 13px;\n transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);\n overflow: hidden;\n}\n\n#math9-widget .m9-card:hover {\n box-shadow: 0 16px 48px rgba(108,99,255,0.14), 0 2px 12px rgba(0,0,0,0.07);\n transform: translateY(-2px);\n border-color: rgba(108,99,255,0.32);\n}\n\n#math9-widget .m9-card.m9-done {\n border-color: rgba(67,209,175,0.45);\n box-shadow: 0 8px 32px rgba(67,209,175,0.10), 0 2px 8px rgba(0,0,0,0.04);\n}\n\n#math9-widget .m9-card-header {\n display: flex;\n align-items: center;\n gap: 12px;\n padding: 16px 20px;\n cursor: pointer;\n user-select: none;\n -webkit-user-select: none;\n transition: background var(--transition);\n position: relative;\n}\n\n#math9-widget .m9-card-header:hover {\n background: rgba(108,99,255,0.04);\n}\n\n#math9-widget .m9-card-icon {\n width: 42px;\n height: 42px;\n border-radius: 12px;\n display: flex;\n align-items: center;\n justify-content: center;\n flex-shrink: 0;\n font-size: 1.3rem;\n}\n\n#math9-widget .m9-card-title-wrap {\n flex: 1;\n min-width: 0;\n}\n\n#math9-widget .m9-card-chapter {\n font-size: 0.72rem;\n color: var(--clr-text-muted);\n font-weight: 600;\n margin-bottom: 2px;\n}\n\n#math9-widget .m9-card-title {\n font-size: 1rem;\n font-weight: 800;\n color: var(--clr-text);\n line-height: 1.3;\n}\n\n#math9-widget .m9-card-badge {\n font-size: 0.7rem;\n font-weight: 700;\n border-radius: 99px;\n padding: 3px 10px;\n margin-right: 6px;\n white-space: nowrap;\n}\n\n#math9-widget .m9-badge-done {\n background: rgba(67,209,175,0.16);\n color: #1a8a72;\n border: 1px solid rgba(67,209,175,0.3);\n}\n\n#math9-widget .m9-badge-pending {\n background: rgba(108,99,255,0.10);\n color: var(--clr-primary);\n border: 1px solid rgba(108,99,255,0.18);\n}\n\n#math9-widget .m9-chevron {\n width: 22px;\n height: 22px;\n flex-shrink: 0;\n transition: transform var(--transition);\n color: var(--clr-text-muted);\n}\n\n#math9-widget .m9-card.m9-open .m9-chevron {\n transform: rotate(180deg);\n}\n\n\/* ====== ACCORDION BODY ====== *\/\n#math9-widget .m9-card-body {\n max-height: 0;\n overflow: hidden;\n transition: max-height 0.45s cubic-bezier(.4,0,.2,1);\n}\n\n#math9-widget .m9-card.m9-open .m9-card-body {\n max-height: 2400px;\n}\n\n#math9-widget .m9-card-body-inner {\n padding: 0 20px 20px 20px;\n border-top: 1px solid rgba(108,99,255,0.09);\n}\n\n\/* ====== CONTENT BLOCKS ====== *\/\n#math9-widget .m9-desc {\n font-size: 0.9rem;\n color: var(--clr-text-light);\n line-height: 1.8;\n margin: 14px 0 10px 0;\n}\n\n#math9-widget .m9-block-title {\n font-size: 0.78rem;\n font-weight: 800;\n color: var(--clr-primary);\n text-transform: uppercase;\n letter-spacing: 0.8px;\n margin: 14px 0 6px 0;\n display: flex;\n align-items: center;\n gap: 6px;\n}\n\n#math9-widget .m9-formula-box {\n background: rgba(108,99,255,0.07);\n border: 1.5px solid rgba(108,99,255,0.16);\n border-radius: var(--radius-sm);\n padding: 12px 16px;\n margin: 6px 0 10px 0;\n font-size: 0.93rem;\n font-weight: 700;\n color: var(--clr-primary);\n line-height: 1.9;\n font-family: 'Courier New', monospace;\n direction: ltr;\n text-align: center;\n}\n\n#math9-widget .m9-formula-box.rtl-formula {\n direction: rtl;\n text-align: right;\n font-family: inherit;\n font-size: 0.88rem;\n}\n\n#math9-widget .m9-example-box {\n background: rgba(247,167,49,0.08);\n border: 1.5px solid rgba(247,167,49,0.22);\n border-radius: var(--radius-sm);\n padding: 12px 16px;\n margin: 6px 0 10px 0;\n font-size: 0.87rem;\n color: #7a5200;\n line-height: 1.8;\n}\n\n#math9-widget .m9-example-box strong {\n color: #c07800;\n display: block;\n margin-bottom: 4px;\n font-size: 0.8rem;\n}\n\n#math9-widget .m9-tips-list {\n list-style: none;\n padding: 0;\n margin: 6px 0 10px 0;\n}\n\n#math9-widget .m9-tips-list li {\n font-size: 0.86rem;\n color: var(--clr-text-light);\n padding: 5px 0 5px 0;\n border-bottom: 1px dashed rgba(108,99,255,0.10);\n display: flex;\n align-items: flex-start;\n gap: 8px;\n line-height: 1.7;\n}\n\n#math9-widget .m9-tips-list li:last-child {\n border-bottom: none;\n}\n\n#math9-widget .m9-tip-dot {\n width: 7px;\n height: 7px;\n border-radius: 50%;\n background: var(--clr-secondary);\n flex-shrink: 0;\n margin-top: 6px;\n}\n\n#math9-widget .m9-summary-box {\n background: rgba(67,209,175,0.08);\n border: 1.5px solid rgba(67,209,175,0.22);\n border-radius: var(--radius-sm);\n padding: 11px 16px;\n margin: 10px 0 6px 0;\n font-size: 0.85rem;\n color: #1a6a58;\n line-height: 1.8;\n}\n\n\/* ====== LEARNED TOGGLE ====== *\/\n#math9-widget .m9-learned-row {\n display: flex;\n align-items: center;\n gap: 10px;\n margin-top: 14px;\n padding-top: 12px;\n border-top: 1px solid rgba(108,99,255,0.10);\n}\n\n#math9-widget .m9-learned-label {\n font-size: 0.84rem;\n font-weight: 700;\n color: var(--clr-text-light);\n flex: 1;\n}\n\n#math9-widget .m9-toggle {\n position: relative;\n width: 46px;\n height: 26px;\n cursor: pointer;\n flex-shrink: 0;\n}\n\n#math9-widget .m9-toggle input {\n opacity: 0;\n width: 0;\n height: 0;\n position: absolute;\n}\n\n#math9-widget .m9-toggle-slider {\n position: absolute;\n inset: 0;\n background: rgba(108,99,255,0.15);\n border-radius: 99px;\n border: 1.5px solid rgba(108,99,255,0.20);\n transition: background var(--transition), border-color var(--transition);\n}\n\n#math9-widget .m9-toggle-slider::after {\n content: '';\n position: absolute;\n width: 18px;\n height: 18px;\n background: #fff;\n border-radius: 50%;\n top: 2px;\n right: 2px;\n box-shadow: 0 2px 6px rgba(0,0,0,0.14);\n transition: transform var(--transition);\n}\n\n#math9-widget .m9-toggle input:checked + .m9-toggle-slider {\n background: linear-gradient(135deg, #43d1af, #6c63ff);\n border-color: #43d1af;\n}\n\n#math9-widget .m9-toggle input:checked + .m9-toggle-slider::after {\n transform: translateX(-20px);\n}\n\n\/* ====== FORMULA HUB ====== *\/\n#math9-widget .m9-formula-hub {\n background: var(--glass-bg);\n backdrop-filter: var(--glass-blur);\n -webkit-backdrop-filter: var(--glass-blur);\n border: 1.5px solid var(--glass-border);\n border-radius: var(--radius);\n box-shadow: var(--glass-shadow);\n padding: 22px 24px 18px 24px;\n margin-bottom: 13px;\n transition: box-shadow var(--transition), transform var(--transition);\n}\n\n#math9-widget .m9-formula-hub:hover {\n box-shadow: 0 16px 48px rgba(108,99,255,0.13);\n transform: translateY(-2px);\n}\n\n#math9-widget .m9-formula-hub h2 {\n font-size: 1.05rem;\n font-weight: 800;\n color: var(--clr-primary);\n margin-bottom: 16px;\n display: flex;\n align-items: center;\n gap: 10px;\n}\n\n#math9-widget .m9-formula-grid {\n display: grid;\n grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));\n gap: 10px;\n}\n\n#math9-widget .m9-formula-item {\n background: rgba(108,99,255,0.06);\n border: 1.5px solid rgba(108,99,255,0.13);\n border-radius: var(--radius-sm);\n padding: 10px 14px;\n font-size: 0.83rem;\n color: var(--clr-text-light);\n line-height: 1.7;\n transition: background var(--transition);\n}\n\n#math9-widget .m9-formula-item:hover {\n background: rgba(108,99,255,0.11);\n}\n\n#math9-widget .m9-formula-item .fi-label {\n font-size: 0.72rem;\n font-weight: 700;\n color: var(--clr-secondary);\n display: block;\n margin-bottom: 3px;\n}\n\n#math9-widget .m9-formula-item .fi-val {\n font-family: 'Courier New', monospace;\n font-weight: 700;\n color: var(--clr-primary);\n font-size: 0.88rem;\n direction: ltr;\n display: block;\n text-align: center;\n}\n\n\/* ====== NIGHT REVIEW ====== *\/\n#math9-widget .m9-night-card {\n background: var(--glass-bg);\n backdrop-filter: var(--glass-blur);\n -webkit-backdrop-filter: var(--glass-blur);\n border: 1.5px solid rgba(247,167,49,0.32);\n border-radius: var(--radius);\n box-shadow: 0 8px 32px rgba(247,167,49,0.08), 0 2px 8px rgba(0,0,0,0.05);\n padding: 22px 24px 18px 24px;\n margin-bottom: 13px;\n transition: box-shadow var(--transition), transform var(--transition);\n}\n\n#math9-widget .m9-night-card:hover {\n transform: translateY(-2px);\n box-shadow: 0 16px 48px rgba(247,167,49,0.13);\n}\n\n#math9-widget .m9-night-card h2 {\n font-size: 1.05rem;\n font-weight: 800;\n color: #c07800;\n margin-bottom: 14px;\n display: flex;\n align-items: center;\n gap: 10px;\n}\n\n#math9-widget .m9-night-list {\n list-style: none;\n padding: 0;\n display: grid;\n grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));\n gap: 8px;\n}\n\n#math9-widget .m9-night-list li {\n background: rgba(247,167,49,0.07);\n border: 1.5px solid rgba(247,167,49,0.18);\n border-radius: var(--radius-sm);\n padding: 9px 13px;\n font-size: 0.84rem;\n color: #7a5200;\n display: flex;\n align-items: flex-start;\n gap: 8px;\n line-height: 1.7;\n}\n\n#math9-widget .m9-night-list li .ni-icon {\n flex-shrink: 0;\n margin-top: 1px;\n}\n\n\/* ====== QUIZ SECTION ====== *\/\n#math9-widget .m9-quiz-card {\n background: var(--glass-bg);\n backdrop-filter: var(--glass-blur);\n -webkit-backdrop-filter: var(--glass-blur);\n border: 1.5px solid rgba(108,99,255,0.22);\n border-radius: var(--radius);\n box-shadow: var(--glass-shadow);\n padding: 22px 24px 18px 24px;\n margin-bottom: 13px;\n}\n\n#math9-widget .m9-quiz-card h2 {\n font-size: 1.05rem;\n font-weight: 800;\n color: var(--clr-primary);\n margin-bottom: 16px;\n display: flex;\n align-items: center;\n gap: 10px;\n}\n\n#math9-widget .m9-quiz-q {\n background: rgba(108,99,255,0.05);\n border: 1.5px solid rgba(108,99,255,0.13);\n border-radius: var(--radius-sm);\n padding: 14px 16px;\n margin-bottom: 10px;\n}\n\n#math9-widget .m9-quiz-q p {\n font-size: 0.9rem;\n font-weight: 700;\n color: var(--clr-text);\n margin-bottom: 10px;\n line-height: 1.7;\n}\n\n#math9-widget .m9-quiz-opts {\n display: flex;\n flex-direction: column;\n gap: 7px;\n}\n\n#math9-widget .m9-quiz-opt {\n background: rgba(255,255,255,0.6);\n border: 1.5px solid rgba(108,99,255,0.14);\n border-radius: 8px;\n padding: 8px 14px;\n font-size: 0.85rem;\n color: var(--clr-text-light);\n cursor: pointer;\n transition: background var(--transition), border-color var(--transition), color var(--transition);\n display: flex;\n align-items: center;\n gap: 8px;\n text-align: right;\n font-family: inherit;\n width: 100%;\n direction: rtl;\n}\n\n#math9-widget .m9-quiz-opt:hover:not([disabled]) {\n background: rgba(108,99,255,0.10);\n border-color: rgba(108,99,255,0.30);\n color: var(--clr-primary);\n}\n\n#math9-widget .m9-quiz-opt.m9-correct {\n background: rgba(67,209,175,0.15);\n border-color: rgba(67,209,175,0.45);\n color: #1a6a58;\n font-weight: 700;\n}\n\n#math9-widget .m9-quiz-opt.m9-wrong {\n background: rgba(255,107,107,0.12);\n border-color: rgba(255,107,107,0.38);\n color: #a03030;\n}\n\n#math9-widget .m9-quiz-feedback {\n font-size: 0.8rem;\n font-weight: 700;\n margin-top: 8px;\n padding: 6px 12px;\n border-radius: 7px;\n display: none;\n}\n\n#math9-widget .m9-quiz-feedback.show { display: block; }\n#math9-widget .m9-quiz-feedback.ok { background: rgba(67,209,175,0.13); color: #1a6a58; }\n#math9-widget .m9-quiz-feedback.err { background: rgba(255,107,107,0.12); color: #a03030; }\n\n#math9-widget .m9-quiz-score {\n font-size: 0.9rem;\n font-weight: 800;\n color: var(--clr-primary);\n text-align: center;\n padding: 10px;\n margin-top: 6px;\n}\n\n\/* ====== COLORS FOR CHAPTER ICONS ====== *\/\n#math9-widget .ci-violet { background: rgba(108,99,255,0.13); }\n#math9-widget .ci-teal { background: rgba(67,209,175,0.13); }\n#math9-widget .ci-amber { background: rgba(247,167,49,0.13); }\n#math9-widget .ci-red { background: rgba(255,107,107,0.13); }\n#math9-widget .ci-blue { background: rgba(52,152,219,0.13); }\n#math9-widget .ci-green { background: rgba(39,174,96,0.13); }\n#math9-widget .ci-pink { background: rgba(232,67,147,0.13); }\n#math9-widget .ci-indigo { background: rgba(76,61,196,0.13); }\n\n\/* ====== RESPONSIVE ====== *\/\n@media (max-width: 640px) {\n #math9-widget .m9-header {\n padding: 20px 16px 18px 16px;\n }\n #math9-widget .m9-header-text h1 { font-size: 1.2rem; }\n #math9-widget .m9-progress-card { padding: 16px 16px; }\n #math9-widget .m9-card-header { padding: 13px 14px; }\n #math9-widget .m9-card-body-inner { padding: 0 14px 16px 14px; }\n #math9-widget .m9-formula-grid { grid-template-columns: 1fr 1fr; }\n #math9-widget .m9-night-list { grid-template-columns: 1fr; }\n #math9-widget .m9-formula-hub, #math9-widget .m9-night-card, #math9-widget .m9-quiz-card {\n padding: 16px 14px 14px 14px;\n }\n}\n\n\/* ====== ANIMATIONS ====== *\/\n@keyframes m9FadeIn {\n from { opacity: 0; transform: translateY(14px); }\n to { opacity: 1; transform: translateY(0); }\n}\n\n#math9-widget .m9-card,\n#math9-widget .m9-progress-card,\n#math9-widget .m9-header,\n#math9-widget .m9-formula-hub,\n#math9-widget .m9-night-card,\n#math9-widget .m9-quiz-card {\n animation: m9FadeIn 0.45s ease both;\n}\n\n#math9-widget .m9-card:nth-child(1) { animation-delay: 0.03s; }\n#math9-widget .m9-card:nth-child(2) { animation-delay: 0.06s; }\n#math9-widget .m9-card:nth-child(3) { animation-delay: 0.09s; }\n#math9-widget .m9-card:nth-child(4) { animation-delay: 0.12s; }\n#math9-widget .m9-card:nth-child(5) { animation-delay: 0.15s; }\n#math9-widget .m9-card:nth-child(6) { animation-delay: 0.18s; }\n#math9-widget .m9-card:nth-child(7) { animation-delay: 0.21s; }\n#math9-widget .m9-card:nth-child(8) { animation-delay: 0.24s; }\n<\/style>\n<\/head>\n<body style=\"background:transparent; margin:0; padding:0;\">\n\n<div id=\"math9-widget\">\n\n <!-- SVG DEFS FOR PROGRESS RING GRADIENT -->\n <svg width=\"0\" height=\"0\" style=\"position:absolute;overflow:hidden;\" aria-hidden=\"true\">\n <defs>\n <linearGradient id=\"m9RingGrad\" x1=\"0%\" y1=\"0%\" x2=\"100%\" y2=\"0%\">\n <stop offset=\"0%\" style=\"stop-color:#6c63ff\"\/>\n <stop offset=\"100%\" style=\"stop-color:#43d1af\"\/>\n <\/linearGradient>\n <\/defs>\n <\/svg>\n\n <!-- HEADER -->\n <div class=\"m9-header\">\n <div class=\"m9-header-icon\">\n <svg width=\"34\" height=\"34\" viewBox=\"0 0 34 34\" fill=\"none\" aria-hidden=\"true\">\n <rect x=\"3\" y=\"3\" width=\"28\" height=\"28\" rx=\"7\" fill=\"rgba(108,99,255,0.13)\" stroke=\"#6c63ff\" stroke-width=\"1.5\"\/>\n <text x=\"17\" y=\"22\" text-anchor=\"middle\" font-size=\"14\" font-weight=\"900\" fill=\"#6c63ff\" font-family=\"serif\">\u2211<\/text>\n <\/svg>\n <\/div>\n <div class=\"m9-header-text\">\n <h1>\u0686\u06a9\u06cc\u062f\u0647 \u062f\u0631\u0648\u0633 \u0631\u06cc\u0627\u0636\u06cc \u067e\u0627\u06cc\u0647 \u0646\u0647\u0645<\/h1>\n <p>\u0645\u0631\u0648\u0631 \u062c\u0627\u0645\u0639\u060c \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\u060c \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc \u0648 \u062a\u0645\u0631\u06cc\u0646\u200c\u0647\u0627\u06cc \u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc<\/p>\n <\/div>\n <div style=\"display:flex;align-items:center;gap:8px;flex-wrap:wrap;\">\n <span style=\"background:rgba(67,209,175,0.12);border:1.5px solid rgba(67,209,175,0.28);border-radius:99px;padding:4px 12px;font-size:0.75rem;font-weight:700;color:#1a8a72;\">\u067e\u0627\u06cc\u0647 \u0646\u0647\u0645<\/span>\n <span style=\"background:rgba(108,99,255,0.10);border:1.5px solid rgba(108,99,255,0.20);border-radius:99px;padding:4px 12px;font-size:0.75rem;font-weight:700;color:#6c63ff;\">\u06f8 \u0641\u0635\u0644<\/span>\n <\/div>\n <\/div>\n\n <!-- PROGRESS CARD -->\n <div class=\"m9-progress-card\">\n <div class=\"m9-progress-ring-wrap\">\n <svg width=\"82\" height=\"82\" viewBox=\"0 0 82 82\" aria-hidden=\"true\">\n <circle class=\"m9-progress-ring-bg\" cx=\"41\" cy=\"41\" r=\"35\"\/>\n <circle class=\"m9-progress-ring-bar\" id=\"m9RingBar\" cx=\"41\" cy=\"41\" r=\"35\"\n stroke-dasharray=\"219.9\"\n stroke-dashoffset=\"219.9\"\/>\n <\/svg>\n <div class=\"m9-progress-pct\" id=\"m9PctText\">\u06f0\u066a<\/div>\n <\/div>\n <div class=\"m9-progress-info\">\n <h3>\u067e\u06cc\u0634\u0631\u0641\u062a \u06a9\u0644\u06cc \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc<\/h3>\n <div class=\"m9-progress-bar-wrap\">\n <div class=\"m9-progress-bar-fill\" id=\"m9BarFill\" style=\"width:0%\"><\/div>\n <\/div>\n <div class=\"m9-progress-label\" id=\"m9ProgressLabel\">\u06f0 \u0627\u0632 \u06f8 \u0641\u0635\u0644 \u062a\u06a9\u0645\u06cc\u0644 \u0634\u062f\u0647<\/div>\n <\/div>\n <button class=\"m9-reset-btn\" onclick=\"m9ResetProgress()\" aria-label=\"\u0628\u0627\u0632\u0646\u0634\u0627\u0646\u06cc \u067e\u06cc\u0634\u0631\u0641\u062a\">\n <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"1 4 1 10 7 10\"\/><path d=\"M3.51 15a9 9 0 1 0 .49-4.95\"\/><\/svg>\n \u0628\u0627\u0632\u0646\u0634\u0627\u0646\u06cc\n <\/button>\n <\/div>\n\n <!-- CHAPTERS LABEL -->\n <div class=\"m9-section-label\">\n <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#7a7a9a\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M4 19.5A2.5 2.5 0 0 1 6.5 17H20\"\/><path d=\"M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z\"\/><\/svg>\n \u062e\u0644\u0627\u0635\u0647 \u0641\u0635\u0644\u200c\u0647\u0627\n <\/div>\n\n <!-- =================== CHAPTER 1 =================== -->\n <div class=\"m9-card\" id=\"m9-ch1\" data-chid=\"ch1\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch1')\" aria-expanded=\"false\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-violet\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <circle cx=\"9\" cy=\"9\" r=\"5\" stroke=\"#6c63ff\" stroke-width=\"2\"\/>\n <circle cx=\"15\" cy=\"15\" r=\"5\" stroke=\"#43d1af\" stroke-width=\"2\"\/>\n <path d=\"M12 6.5 Q15 9 12 11.5\" stroke=\"#6c63ff\" stroke-width=\"1.2\" fill=\"none\"\/>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u0627\u0648\u0644<\/div>\n <div class=\"m9-card-title\">\u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0647\u0627<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch1\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u0645\u062c\u0645\u0648\u0639\u0647 \u06af\u0631\u0648\u0647\u06cc \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u06cc\u0627 \u0627\u0639\u062f\u0627\u062f \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647\u200c\u062e\u0648\u0628\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f. \u0647\u0631 \u0639\u0636\u0648 \u06cc\u0627 \u0639\u0646\u0635\u0631 \u0645\u062c\u0645\u0648\u0639\u0647 \u0628\u0627 \u0622\u06a9\u0648\u0644\u0627\u062f {} \u0646\u0645\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u0645\u0641\u0627\u0647\u06cc\u0645 \u0648 \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\n <\/div>\n <div class=\"m9-formula-box rtl-formula\">\n \u2022 A \u2229 B = \u0627\u0634\u062a\u0631\u0627\u06a9 \u062f\u0648 \u0645\u062c\u0645\u0648\u0639\u0647 (\u0639\u0646\u0627\u0635\u0631 \u0645\u0634\u062a\u0631\u06a9)<br>\n \u2022 A \u222a B = \u0627\u062c\u062a\u0645\u0627\u0639 \u062f\u0648 \u0645\u062c\u0645\u0648\u0639\u0647 (\u0647\u0645\u0647 \u0639\u0646\u0627\u0635\u0631)<br>\n \u2022 A \\ B = \u062a\u0641\u0627\u0636\u0644 (\u0639\u0646\u0627\u0635\u0631 A \u06a9\u0647 \u062f\u0631 B \u0646\u06cc\u0633\u062a\u0646\u062f)<br>\n \u2022 A' = \u0645\u062a\u0645\u0645 \u0645\u062c\u0645\u0648\u0639\u0647 A<br>\n \u2022 n(A \u222a B) = n(A) + n(B) \u2212 n(A \u2229 B)\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n \u0627\u06af\u0631 A = {\u06f1\u060c \u06f2\u060c \u06f3\u060c \u06f4} \u0648 B = {\u06f3\u060c \u06f4\u060c \u06f5\u060c \u06f6} \u0628\u0627\u0634\u0646\u062f\u060c \u0622\u0646\u06af\u0627\u0647:<br>\n A \u2229 B = {\u06f3\u060c \u06f4}  |  A \u222a B = {\u06f1\u060c \u06f2\u060c \u06f3\u060c \u06f4\u060c \u06f5\u060c \u06f6}  |  A \\ B = {\u06f1\u060c \u06f2}\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>\u0645\u062c\u0645\u0648\u0639\u0647 \u062a\u0647\u06cc (\u2205) \u0639\u0636\u0648 \u0647\u0631 \u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0627\u06cc \u0646\u06cc\u0633\u062a \u0627\u0645\u0627 \u0632\u06cc\u0631\u0645\u062c\u0645\u0648\u0639\u0647\u200c\u06cc \u0647\u0645\u0647 \u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0647\u0627\u0633\u062a.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0647\u0631 \u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0627\u06cc \u0632\u06cc\u0631\u0645\u062c\u0645\u0648\u0639\u0647 \u062e\u0648\u062f\u0634 \u0627\u0633\u062a: A \u2286 A<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062a\u0639\u062f\u0627\u062f \u0632\u06cc\u0631\u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0647\u0627\u06cc \u06cc\u06a9 \u0645\u062c\u0645\u0648\u0639\u0647 \u0628\u0627 n \u0639\u0636\u0648 \u0628\u0631\u0627\u0628\u0631 2\u207f \u0627\u0633\u062a.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062f\u0631 \u0646\u0645\u0648\u062f\u0627\u0631 \u0648\u0646\u060c \u0627\u0634\u062a\u0631\u0627\u06a9 \u0628\u062e\u0634 \u0645\u0634\u062a\u0631\u06a9 \u062f\u0648 \u062f\u0627\u06cc\u0631\u0647 \u0627\u0633\u062a.<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0645\u062c\u0645\u0648\u0639\u0647 \u0627\u0628\u0632\u0627\u0631\u06cc \u0628\u0631\u0627\u06cc \u062f\u0633\u062a\u0647\u200c\u0628\u0646\u062f\u06cc \u0627\u0639\u062f\u0627\u062f \u0627\u0633\u062a. \u0639\u0645\u0644\u06cc\u0627\u062a \u0627\u062c\u062a\u0645\u0627\u0639\u060c \u0627\u0634\u062a\u0631\u0627\u06a9\u060c \u062a\u0641\u0627\u0636\u0644 \u0648 \u0645\u062a\u0645\u0645 \u0686\u0647\u0627\u0631 \u0639\u0645\u0644 \u0627\u0635\u0644\u06cc \u0631\u0648\u06cc \u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0647\u0627 \u0647\u0633\u062a\u0646\u062f.\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch1\" onchange=\"m9ToggleDone('ch1', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- =================== CHAPTER 2 =================== -->\n <div class=\"m9-card\" id=\"m9-ch2\" data-chid=\"ch2\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch2')\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-teal\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <text x=\"4\" y=\"18\" font-size=\"14\" font-weight=\"900\" fill=\"#43d1af\" font-family=\"serif\">\u211d<\/text>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u062f\u0648\u0645<\/div>\n <div class=\"m9-card-title\">\u0639\u062f\u062f\u0647\u0627\u06cc \u062d\u0642\u06cc\u0642\u06cc<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch2\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u0627\u0639\u062f\u0627\u062f \u062d\u0642\u06cc\u0642\u06cc \u0634\u0627\u0645\u0644 \u062a\u0645\u0627\u0645 \u0627\u0639\u062f\u0627\u062f \u0637\u0628\u06cc\u0639\u06cc\u060c \u0635\u062d\u06cc\u062d\u060c \u06af\u0648\u06cc\u0627 \u0648 \u063a\u06cc\u0631\u06af\u0648\u06cc\u0627 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u062e\u0637 \u0627\u0639\u062f\u0627\u062f \u0646\u0645\u0627\u06cc\u0634 \u0628\u0635\u0631\u06cc \u0627\u0639\u062f\u0627\u062f \u062d\u0642\u06cc\u0642\u06cc \u0627\u0633\u062a.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u062f\u0633\u062a\u0647\u200c\u0628\u0646\u062f\u06cc \u0627\u0639\u062f\u0627\u062f\n <\/div>\n <div class=\"m9-formula-box rtl-formula\">\n \u2115 \u2282 \u2124 \u2282 \u211a \u2282 \u211d<br>\n \u2022 \u2115: \u0627\u0639\u062f\u0627\u062f \u0637\u0628\u06cc\u0639\u06cc {\u06f1\u060c \u06f2\u060c \u06f3\u060c ...}<br>\n \u2022 \u2124: \u0627\u0639\u062f\u0627\u062f \u0635\u062d\u06cc\u062d {...\u060c -\u06f2\u060c -\u06f1\u060c \u06f0\u060c \u06f1\u060c \u06f2\u060c ...}<br>\n \u2022 \u211a: \u0627\u0639\u062f\u0627\u062f \u06af\u0648\u06cc\u0627 (\u06a9\u0633\u0631\u06cc \u06cc\u0627 \u0627\u0639\u0634\u0627\u0631 \u0645\u062a\u0646\u0627\u0648\u0628)<br>\n \u2022 \u211d\\\u211a: \u0627\u0639\u062f\u0627\u062f \u063a\u06cc\u0631\u06af\u0648\u06cc\u0627 (\u221a\u06f2\u060c \u03c0\u060c ...)<br>\n \u2022 \u0642\u062f\u0631\u0645\u0637\u0644\u0642: |a| = a \u0627\u06af\u0631 a\u22650\u060c \u0648 |a| = \u2212a \u0627\u06af\u0631 a < 0\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n \u221a\u06f9 = \u06f3 (\u063a\u06cc\u0631\u06af\u0648\u06cc\u0627 \u0646\u06cc\u0633\u062a \u0686\u0648\u0646 \u06f3 \u0639\u062f\u062f \u0635\u062d\u06cc\u062d \u0627\u0633\u062a)<br>\n \u221a\u06f2 \u2248 \u06f1.\u06f4\u06f1\u06f4... (\u063a\u06cc\u0631\u06af\u0648\u06cc\u0627 \u0627\u0633\u062a \u0686\u0648\u0646 \u0627\u0639\u0634\u0627\u0631 \u0622\u0646 \u0646\u0627\u0645\u062a\u0646\u0627\u0648\u0628 \u0627\u0633\u062a)<br>\n |\u2212\u06f5| = \u06f5  |  |+\u06f7| = \u06f7\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>\u0647\u0631 \u0639\u062f\u062f \u06af\u0648\u06cc\u0627\u06cc\u06cc \u0631\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a p\/q \u0646\u0648\u0634\u062a (q\u22600).<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0627\u0639\u062f\u0627\u062f \u063a\u06cc\u0631\u06af\u0648\u06cc\u0627 \u062f\u0627\u0631\u0627\u06cc \u0627\u0639\u0634\u0627\u0631 \u0646\u0627\u0645\u062a\u0646\u0627\u0648\u0628 \u0648 \u0646\u0627\u0645\u062d\u062f\u0648\u062f \u0647\u0633\u062a\u0646\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0642\u062f\u0631\u0645\u0637\u0644\u0642 \u0647\u0645\u06cc\u0634\u0647 \u0645\u062b\u0628\u062a \u06cc\u0627 \u0635\u0641\u0631 \u0627\u0633\u062a\u060c \u0647\u0631\u06af\u0632 \u0645\u0646\u0641\u06cc \u0646\u06cc\u0633\u062a.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>|a - b| = \u0641\u0627\u0635\u0644\u0647 a \u0627\u0632 b \u0631\u0648\u06cc \u062e\u0637 \u0627\u0639\u062f\u0627\u062f.<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0627\u0639\u062f\u0627\u062f \u062d\u0642\u06cc\u0642\u06cc \u06cc\u06a9 \u0633\u0644\u0633\u0644\u0647\u200c\u0645\u0631\u0627\u062a\u0628 \u062f\u0627\u0631\u0646\u062f: \u2115 \u2282 \u2124 \u2282 \u211a \u2282 \u211d. \u0627\u0639\u062f\u0627\u062f \u063a\u06cc\u0631\u06af\u0648\u06cc\u0627 \u0645\u062b\u0644 \u221a\u06f2 \u0648 \u03c0 \u062c\u0632\u0621 \u0627\u0639\u062f\u0627\u062f \u062d\u0642\u06cc\u0642\u06cc \u0647\u0633\u062a\u0646\u062f \u0627\u0645\u0627 \u06af\u0648\u06cc\u0627 \u0646\u06cc\u0633\u062a\u0646\u062f.\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch2\" onchange=\"m9ToggleDone('ch2', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- =================== CHAPTER 3 =================== -->\n <div class=\"m9-card\" id=\"m9-ch3\" data-chid=\"ch3\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch3')\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-amber\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <polygon points=\"12,3 21,20 3,20\" stroke=\"#f7a731\" stroke-width=\"2\" fill=\"none\" stroke-linejoin=\"round\"\/>\n <line x1=\"12\" y1=\"3\" x2=\"12\" y2=\"20\" stroke=\"#f7a731\" stroke-width=\"1.2\" stroke-dasharray=\"2 2\"\/>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u0633\u0648\u0645<\/div>\n <div class=\"m9-card-title\">\u0627\u0633\u062a\u062f\u0644\u0627\u0644 \u0648 \u0627\u062b\u0628\u0627\u062a \u062f\u0631 \u0647\u0646\u062f\u0633\u0647<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch3\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u0627\u0633\u062a\u062f\u0644\u0627\u0644 \u0631\u06cc\u0627\u0636\u06cc \u0631\u0648\u0634\u06cc \u0627\u0633\u062a \u0628\u0631\u0627\u06cc \u0627\u062b\u0628\u0627\u062a \u06af\u0632\u0627\u0631\u0647\u200c\u0647\u0627 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0635\u0648\u0644 \u067e\u0630\u06cc\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647. \u062f\u0631 \u0647\u0646\u062f\u0633\u0647\u060c \u0627\u0632 \u0642\u0636\u0627\u06cc\u0627\u060c \u062a\u0639\u0631\u06cc\u0641\u200c\u0647\u0627 \u0648 \u0627\u0635\u0644\u200c\u0645\u0648\u0636\u0648\u0639\u0647\u200c\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u0642\u0636\u0627\u06cc\u0627\u06cc \u0645\u0647\u0645 \u0647\u0646\u062f\u0633\u0647\n <\/div>\n <div class=\"m9-formula-box rtl-formula\">\n \u2022 \u0642\u0636\u06cc\u0647 \u062a\u0627\u0644\u0633: \u062e\u0637\u0648\u0637 \u0645\u0648\u0627\u0632\u06cc \u0646\u0633\u0628\u062a\u200c\u0647\u0627\u06cc \u0645\u0633\u0627\u0648\u06cc \u0645\u06cc\u200c\u0633\u0627\u0632\u0646\u062f.<br>\n \u2022 \u0632\u0648\u0627\u06cc\u0627\u06cc \u0645\u062a\u0642\u0627\u0628\u0644 \u0628\u0647 \u0631\u0623\u0633: \u0645\u0633\u0627\u0648\u06cc \u0647\u0633\u062a\u0646\u062f.<br>\n \u2022 \u0645\u062c\u0645\u0648\u0639 \u0632\u0648\u0627\u06cc\u0627\u06cc \u0645\u062b\u0644\u062b = \u06f1\u06f8\u06f0 \u062f\u0631\u062c\u0647<br>\n \u2022 \u0632\u0627\u0648\u06cc\u0647 \u062e\u0627\u0631\u062c\u06cc = \u0645\u062c\u0645\u0648\u0639 \u062f\u0648 \u0632\u0627\u0648\u06cc\u0647 \u063a\u06cc\u0631\u0645\u062c\u0627\u0648\u0631 \u062f\u0627\u062e\u0644\u06cc<br>\n \u2022 \u0645\u062b\u0644\u062b\u200c\u0647\u0627\u06cc \u0647\u0645\u0646\u0647\u0634\u062a: \u0636-\u0636-\u0636 | \u0636-\u0632-\u0636 | \u0632-\u0636-\u0632 | \u0632-\u0632-\u0636\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n \u062f\u0631 \u0645\u062b\u0644\u062b ABC\u060c \u0632\u0627\u0648\u06cc\u0647 A = \u06f5\u06f0\u00b0 \u0648 \u0632\u0627\u0648\u06cc\u0647 B = \u06f7\u06f0\u00b0<br>\n \u0632\u0627\u0648\u06cc\u0647 C = \u06f1\u06f8\u06f0 \u2212 \u06f5\u06f0 \u2212 \u06f7\u06f0 = \u06f6\u06f0\u00b0<br>\n \u0632\u0627\u0648\u06cc\u0647 \u062e\u0627\u0631\u062c\u06cc \u062f\u0631 C = \u06f5\u06f0 + \u06f7\u06f0 = \u06f1\u06f2\u06f0\u00b0\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>\u0647\u0645\u0646\u0647\u0634\u062a\u06cc \u0645\u062b\u0644\u062b\u200c\u0647\u0627 \u0628\u0627\u06cc\u062f \u0628\u0627 \u06cc\u06a9\u06cc \u0627\u0632 \u0634\u0631\u0637\u200c\u0647\u0627\u06cc \u0636-\u0636-\u0636\u060c \u0636-\u0632-\u0636\u060c \u0632-\u0636-\u0632 \u06cc\u0627 \u0632-\u0632-\u0636 \u0627\u062b\u0628\u0627\u062a \u0634\u0648\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062f\u0631 \u0627\u062b\u0628\u0627\u062a\u060c \u0647\u0631 \u0645\u0631\u062d\u0644\u0647 \u0628\u0627\u06cc\u062f \u062f\u0644\u06cc\u0644 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f (\u0642\u0636\u06cc\u0647\u060c \u062a\u0639\u0631\u06cc\u0641 \u06cc\u0627 \u0645\u0639\u0644\u0648\u0645).<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0632\u0648\u0627\u06cc\u0627\u06cc \u0645\u06a9\u0645\u0644: \u062c\u0645\u0639\u200c\u0634\u0627\u0646 \u06f9\u06f0\u00b0 | \u0632\u0648\u0627\u06cc\u0627\u06cc \u0645\u062a\u0645\u0645: \u062c\u0645\u0639\u200c\u0634\u0627\u0646 \u06f1\u06f8\u06f0\u00b0<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062f\u0631 \u0686\u0647\u0627\u0631\u0636\u0644\u0639\u06cc \u0645\u062c\u0645\u0648\u0639 \u0632\u0648\u0627\u06cc\u0627\u06cc \u062f\u0627\u062e\u0644\u06cc = \u06f3\u06f6\u06f0\u00b0<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0627\u0633\u062a\u062f\u0644\u0627\u0644 \u0647\u0646\u062f\u0633\u06cc \u06cc\u0639\u0646\u06cc \u0627\u062b\u0628\u0627\u062a \u06af\u0627\u0645\u200c\u0628\u0647\u200c\u06af\u0627\u0645 \u0628\u0627 \u0627\u0633\u062a\u0646\u0627\u062f \u0628\u0647 \u0642\u0636\u0627\u06cc\u0627. \u0645\u062b\u0644\u062b\u200c\u0647\u0627\u06cc \u0647\u0645\u0646\u0647\u0634\u062a \u067e\u0627\u06cc\u0647 \u0627\u062b\u0628\u0627\u062a\u200c\u0647\u0627\u06cc \u0647\u0646\u062f\u0633\u06cc \u0647\u0633\u062a\u0646\u062f.\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch3\" onchange=\"m9ToggleDone('ch3', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- =================== CHAPTER 4 =================== -->\n <div class=\"m9-card\" id=\"m9-ch4\" data-chid=\"ch4\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch4')\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-red\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <text x=\"2\" y=\"17\" font-size=\"13\" font-weight=\"900\" fill=\"#ff6b6b\" font-family=\"serif\">\u221a<\/text>\n <text x=\"12\" y=\"10\" font-size=\"7\" font-weight=\"700\" fill=\"#ff6b6b\" font-family=\"serif\">n<\/text>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u0686\u0647\u0627\u0631\u0645<\/div>\n <div class=\"m9-card-title\">\u062a\u0648\u0627\u0646 \u0648 \u0631\u06cc\u0634\u0647<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch4\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u062a\u0648\u0627\u0646\u200c\u0631\u0633\u0627\u0646\u06cc \u0636\u0631\u0628 \u0645\u06a9\u0631\u0631 \u06cc\u06a9 \u0639\u062f\u062f \u062f\u0631 \u062e\u0648\u062f\u0634 \u0627\u0633\u062a. \u0631\u06cc\u0634\u0647\u200c\u06af\u06cc\u0631\u06cc \u0639\u0645\u0644 \u0645\u0639\u06a9\u0648\u0633 \u062a\u0648\u0627\u0646 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u062f\u0648 \u0645\u0641\u0647\u0648\u0645 \u067e\u0627\u06cc\u0647 \u062c\u0628\u0631 \u0648 \u062d\u0633\u0627\u0628 \u067e\u06cc\u0634\u0631\u0641\u062a\u0647 \u0647\u0633\u062a\u0646\u062f.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627 \u0648 \u0642\u0648\u0627\u0646\u06cc\u0646\n <\/div>\n <div class=\"m9-formula-box\">\n a\u1d50 \u00d7 a\u207f = a\u1d50\u207a\u207f<br>\n a\u1d50 \u00f7 a\u207f = a\u1d50\u207b\u207f<br>\n (a\u1d50)\u207f = a\u1d50\u02e3\u207f<br>\n (a\u00d7b)\u207f = a\u207f \u00d7 b\u207f<br>\n a\u2070 = 1 (a\u22600)<br>\n a\u207b\u207f = 1\/a\u207f<br>\n \u207f\u221aa = a^(1\/n)<br>\n \u207f\u221a(a\u00d7b) = \u207f\u221aa \u00d7 \u207f\u221ab\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n \u06f2\u00b3 \u00d7 \u06f2\u2074 = \u06f2\u2077 = \u06f1\u06f2\u06f8<br>\n (\u06f3\u00b2)\u00b3 = \u06f3\u2076 = \u06f7\u06f2\u06f9<br>\n \u221a\u06f4\u06f8 = \u221a(\u06f1\u06f6\u00d7\u06f3) = \u06f4\u221a\u06f3<br>\n \u06f5\u207b\u00b2 = \u06f1\/\u06f2\u06f5\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>\u067e\u0627\u06cc\u0647\u200c\u0647\u0627 \u0628\u0627\u06cc\u062f \u06cc\u06a9\u0633\u0627\u0646 \u0628\u0627\u0634\u0646\u062f \u062a\u0627 \u0628\u062a\u0648\u0627\u0646\u06cc\u0645 \u062a\u0648\u0627\u0646\u200c\u0647\u0627 \u0631\u0627 \u062c\u0645\u0639\/\u062a\u0641\u0631\u06cc\u0642 \u06a9\u0646\u06cc\u0645.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u221a(a\u00b2) = |a| \u0646\u0647 a (\u0627\u06af\u0631 a \u0645\u0646\u0641\u06cc \u0628\u0627\u0634\u062f \u0645\u0648\u0627\u0638\u0628 \u0628\u0627\u0634\u06cc\u062f).<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0628\u0631\u0627\u06cc \u0633\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 \u0631\u06cc\u0634\u0647: \u0627\u0628\u062a\u062f\u0627 \u0639\u062f\u062f \u0631\u0627 \u0628\u0647 \u0639\u0648\u0627\u0645\u0644 \u0627\u0648\u0644 \u062a\u062c\u0632\u06cc\u0647 \u06a9\u0646\u06cc\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0631\u06cc\u0634\u0647 \u0627\u0639\u062f\u0627\u062f \u0645\u0646\u0641\u06cc \u062f\u0631 \u0627\u0639\u062f\u0627\u062f \u062d\u0642\u06cc\u0642\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647 \u0627\u0633\u062a (\u221a(-\u06f4) \u0648\u062c\u0648\u062f \u0646\u062f\u0627\u0631\u062f).<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0642\u0648\u0627\u0646\u06cc\u0646 \u062a\u0648\u0627\u0646 \u0628\u0627\u06cc\u062f \u062d\u0641\u0638 \u0628\u0627\u0634\u0646\u062f. \u0645\u0647\u0645\u200c\u062a\u0631\u06cc\u0646 \u0642\u0627\u0646\u0648\u0646: \u0636\u0631\u0628 = \u062c\u0645\u0639 \u062a\u0648\u0627\u0646\u200c\u0647\u0627 \u0648 \u062a\u0642\u0633\u06cc\u0645 = \u062a\u0641\u0631\u06cc\u0642 \u062a\u0648\u0627\u0646\u200c\u0647\u0627 (\u0628\u0627 \u067e\u0627\u06cc\u0647 \u06cc\u06a9\u0633\u0627\u0646).\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch4\" onchange=\"m9ToggleDone('ch4', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- =================== CHAPTER 5 =================== -->\n <div class=\"m9-card\" id=\"m9-ch5\" data-chid=\"ch5\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch5')\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-blue\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <text x=\"2\" y=\"16\" font-size=\"11\" font-weight=\"900\" fill=\"#3498db\" font-family=\"serif\">ax\u00b2<\/text>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u067e\u0646\u062c\u0645<\/div>\n <div class=\"m9-card-title\">\u0639\u0628\u0627\u0631\u062a\u200c\u0647\u0627\u06cc \u062c\u0628\u0631\u06cc<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch5\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u0639\u0628\u0627\u0631\u062a \u062c\u0628\u0631\u06cc \u062a\u0631\u06a9\u06cc\u0628\u06cc \u0627\u0632 \u0627\u0639\u062f\u0627\u062f\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u0639\u0645\u0644\u06af\u0631\u0647\u0627\u0633\u062a. \u0633\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 \u0639\u0628\u0627\u0631\u062a\u200c\u0647\u0627\u06cc \u062c\u0628\u0631\u06cc \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0636\u0631\u0628 \u0648 \u062a\u062c\u0632\u06cc\u0647 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u0627\u062a\u062d\u0627\u062f\u0647\u0627\u06cc \u0645\u0647\u0645\n <\/div>\n <div class=\"m9-formula-box\">\n (a + b)\u00b2 = a\u00b2 + 2ab + b\u00b2<br>\n (a \u2212 b)\u00b2 = a\u00b2 \u2212 2ab + b\u00b2<br>\n (a + b)(a \u2212 b) = a\u00b2 \u2212 b\u00b2<br>\n (a + b)\u00b3 = a\u00b3 + 3a\u00b2b + 3ab\u00b2 + b\u00b3<br>\n (a \u2212 b)\u00b3 = a\u00b3 \u2212 3a\u00b2b + 3ab\u00b2 \u2212 b\u00b3<br>\n a\u00b2 \u2212 b\u00b2 = (a+b)(a\u2212b)<br>\n a\u00b3 + b\u00b3 = (a+b)(a\u00b2\u2212ab+b\u00b2)<br>\n a\u00b3 \u2212 b\u00b3 = (a\u2212b)(a\u00b2+ab+b\u00b2)\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n (x + \u06f3)\u00b2 = x\u00b2 + \u06f6x + \u06f9<br>\n (\u06f2x \u2212 \u06f5)(\u06f2x + \u06f5) = \u06f4x\u00b2 \u2212 \u06f2\u06f5<br>\n \u062a\u062c\u0632\u06cc\u0647: x\u00b2 \u2212 \u06f9 = (x+\u06f3)(x\u2212\u06f3)\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>\u0627\u062a\u062d\u0627\u062f \u0645\u0631\u0628\u0639 \u0645\u062c\u0645\u0648\u0639 \u0631\u0627 \u0628\u0627 2ab \u0627\u0634\u062a\u0628\u0627\u0647 \u0646\u06af\u06cc\u0631\u06cc\u062f: (a+b)\u00b2 \u2260 a\u00b2+b\u00b2<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0628\u0631\u0627\u06cc \u062a\u062c\u0632\u06cc\u0647: \u0627\u0628\u062a\u062f\u0627 \u0639\u0627\u0645\u0644 \u0645\u0634\u062a\u0631\u06a9 \u0631\u0627 \u062e\u0627\u0631\u062c \u06a9\u0646\u06cc\u062f\u060c \u0633\u067e\u0633 \u0627\u062a\u062d\u0627\u062f \u0645\u0646\u0627\u0633\u0628 \u0631\u0627 \u0627\u0639\u0645\u0627\u0644 \u06a9\u0646\u06cc\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0627\u062a\u062d\u0627\u062f \u0645\u0627\u0628\u0647\u200c\u0627\u0644\u062a\u0641\u0627\u0648\u062a \u0645\u0631\u0628\u0639\u0627\u062a \u067e\u0631\u06a9\u0627\u0631\u0628\u0631\u062f\u062a\u0631\u06cc\u0646 \u0627\u062a\u062d\u0627\u062f \u062f\u0631 \u0627\u0645\u062a\u062d\u0627\u0646\u0627\u062a \u0627\u0633\u062a.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062c\u0645\u0644\u0627\u062a \u0647\u0645\u0627\u0646\u0646\u062f \u0631\u0627 \u0628\u0627 \u0647\u0645 \u062c\u0645\u0639 \u06a9\u0646\u06cc\u062f.<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0627\u062a\u062d\u0627\u062f\u0647\u0627\u06cc \u062c\u0628\u0631\u06cc \u06a9\u0644\u06cc\u062f\u06cc\u200c\u062a\u0631\u06cc\u0646 \u0627\u0628\u0632\u0627\u0631 \u0627\u06cc\u0646 \u0641\u0635\u0644 \u0647\u0633\u062a\u0646\u062f. \u062d\u0641\u0638 \u0648 \u062a\u0645\u0631\u06cc\u0646 \u0622\u0646\u200c\u0647\u0627 \u0645\u0648\u062c\u0628 \u062d\u0644 \u0633\u0631\u06cc\u0639\u200c\u062a\u0631 \u0645\u0633\u0627\u0626\u0644 \u0645\u06cc\u200c\u0634\u0648\u062f.\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch5\" onchange=\"m9ToggleDone('ch5', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- =================== CHAPTER 6 =================== -->\n <div class=\"m9-card\" id=\"m9-ch6\" data-chid=\"ch6\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch6')\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-green\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <line x1=\"3\" y1=\"19\" x2=\"21\" y2=\"5\" stroke=\"#27ae60\" stroke-width=\"2.2\" stroke-linecap=\"round\"\/>\n <circle cx=\"12\" cy=\"12\" r=\"2.5\" fill=\"#27ae60\" opacity=\"0.4\"\/>\n <text x=\"13\" y=\"21\" font-size=\"7\" font-weight=\"900\" fill=\"#27ae60\" font-family=\"serif\">y=mx+b<\/text>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u0634\u0634\u0645<\/div>\n <div class=\"m9-card-title\">\u062e\u0637 \u0648 \u0645\u0639\u0627\u062f\u0644\u0647\u200c\u0647\u0627\u06cc \u062e\u0637\u06cc<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch6\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u0645\u0639\u0627\u062f\u0644\u0647 \u062e\u0637\u06cc \u0631\u0627\u0628\u0637\u0647\u200c\u0627\u06cc \u0628\u06cc\u0646 \u062f\u0648 \u0645\u062a\u063a\u06cc\u0631 \u0627\u0633\u062a \u06a9\u0647 \u0646\u0645\u0648\u062f\u0627\u0631\u0634 \u06cc\u06a9 \u062e\u0637 \u0645\u0633\u062a\u0642\u06cc\u0645 \u0645\u06cc\u200c\u0634\u0648\u062f. \u062f\u0633\u062a\u06af\u0627\u0647 \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u062e\u0637\u06cc \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641\u06cc \u0628\u0631\u0627\u06cc \u062d\u0644 \u062f\u0627\u0631\u062f.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f\u06cc\n <\/div>\n <div class=\"m9-formula-box\">\n y = mx + b<br>\n m = (y\u2082 \u2212 y\u2081) \/ (x\u2082 \u2212 x\u2081)<br>\n ax + by = c (\u0641\u0631\u0645 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f)<br>\n \u062f\u0648 \u062e\u0637 \u0645\u0648\u0627\u0632\u06cc: m\u2081 = m\u2082<br>\n \u062f\u0648 \u062e\u0637 \u0639\u0645\u0648\u062f: m\u2081 \u00d7 m\u2082 = \u22121<br>\n \u0646\u0642\u0637\u0647 \u062a\u0642\u0627\u0637\u0639 \u0628\u0627 \u0645\u062d\u0648\u0631 y: x=0 \u0628\u06af\u0630\u0627\u0631<br>\n \u0646\u0642\u0637\u0647 \u062a\u0642\u0627\u0637\u0639 \u0628\u0627 \u0645\u062d\u0648\u0631 x: y=0 \u0628\u06af\u0630\u0627\u0631\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n \u0645\u0639\u0627\u062f\u0644\u0647: y = 2x + 3<br>\n \u0634\u06cc\u0628 m = 2 | \u0639\u0631\u0636 \u0627\u0632 \u0645\u0628\u062f\u0623 b = 3<br>\n \u0646\u0642\u0637\u0647 (\u06f0\u060c \u06f3) \u0631\u0648\u06cc \u0646\u0645\u0648\u062f\u0627\u0631 \u0627\u0633\u062a.<br>\n \u062f\u0633\u062a\u06af\u0627\u0647: { x + y = 5 \u0648 x \u2212 y = 1 } \u2192 x=3, y=2\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>\u0628\u0631\u0627\u06cc \u0631\u0633\u0645 \u0646\u0645\u0648\u062f\u0627\u0631 \u062e\u0637\u060c \u062f\u0648 \u0646\u0642\u0637\u0647 \u06a9\u0627\u0641\u06cc \u0627\u0633\u062a.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u062d\u0644 \u062f\u0633\u062a\u06af\u0627\u0647: \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646\u06cc\u060c \u062d\u0630\u0641 (\u062a\u0631\u06a9\u06cc\u0628)\u060c \u0646\u0645\u0648\u062f\u0627\u0631\u06cc.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062f\u0633\u062a\u06af\u0627\u0647\u06cc \u06a9\u0647 \u062e\u0637\u0648\u0637\u0634 \u0645\u0648\u0627\u0632\u06cc \u0647\u0633\u062a\u0646\u062f \u062c\u0648\u0627\u0628 \u0646\u062f\u0627\u0631\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062f\u0633\u062a\u06af\u0627\u0647\u06cc \u06a9\u0647 \u062e\u0637\u0648\u0637\u0634 \u0645\u0646\u0637\u0628\u0642\u0646\u062f \u0628\u06cc\u200c\u0646\u0647\u0627\u06cc\u062a \u062c\u0648\u0627\u0628 \u062f\u0627\u0631\u062f.<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0645\u0639\u0627\u062f\u0644\u0647 \u062e\u0637\u06cc \u0628\u0627 \u062f\u0648 \u0645\u062a\u063a\u06cc\u0631 \u0646\u0645\u0648\u062f\u0627\u0631\u0634 \u062e\u0637 \u0645\u0633\u062a\u0642\u06cc\u0645 \u0627\u0633\u062a. \u0634\u06cc\u0628 \u0646\u0634\u0627\u0646\u200c\u062f\u0647\u0646\u062f\u0647 \u0645\u06cc\u0632\u0627\u0646 \u062a\u063a\u06cc\u06cc\u0631 y \u0646\u0633\u0628\u062a \u0628\u0647 x \u0627\u0633\u062a.\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch6\" onchange=\"m9ToggleDone('ch6', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- =================== CHAPTER 7 =================== -->\n <div class=\"m9-card\" id=\"m9-ch7\" data-chid=\"ch7\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch7')\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-pink\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <text x=\"2\" y=\"11\" font-size=\"9\" font-weight=\"900\" fill=\"#e84393\" font-family=\"serif\">P(x)<\/text>\n <line x1=\"2\" y1=\"13\" x2=\"22\" y2=\"13\" stroke=\"#e84393\" stroke-width=\"1.8\"\/>\n <text x=\"2\" y=\"21\" font-size=\"9\" font-weight=\"900\" fill=\"#e84393\" font-family=\"serif\">Q(x)<\/text>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u0647\u0641\u062a\u0645<\/div>\n <div class=\"m9-card-title\">\u0639\u0628\u0627\u0631\u062a\u200c\u0647\u0627\u06cc \u06af\u0648\u06cc\u0627<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch7\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u0639\u0628\u0627\u0631\u062a \u06af\u0648\u06cc\u0627 \u06a9\u0633\u0631\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0635\u0648\u0631\u062a \u0648 \u0645\u062e\u0631\u062c \u0622\u0646 \u0686\u0646\u062f\u062c\u0645\u0644\u0647\u200c\u0627\u06cc \u0647\u0633\u062a\u0646\u062f. \u0633\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646\u060c \u062c\u0645\u0639\u060c \u062a\u0641\u0631\u06cc\u0642\u060c \u0636\u0631\u0628 \u0648 \u062a\u0642\u0633\u06cc\u0645 \u0639\u0628\u0627\u0631\u0627\u062a \u06af\u0648\u06cc\u0627 \u0628\u0627 \u0642\u0648\u0627\u0646\u06cc\u0646 \u062e\u0627\u0635\u06cc \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u0642\u0648\u0627\u0646\u06cc\u0646 \u0648 \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\n <\/div>\n <div class=\"m9-formula-box\">\n \u0633\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646: P(x)\/Q(x) \u2192 \u062a\u062c\u0632\u06cc\u0647 \u0648 \u062d\u0630\u0641 \u0639\u0648\u0627\u0645\u0644 \u0645\u0634\u062a\u0631\u06a9<br>\n a\/b \u00d7 c\/d = (a\u00d7c)\/(b\u00d7d)<br>\n a\/b \u00f7 c\/d = a\/b \u00d7 d\/c<br>\n a\/b \u00b1 c\/b = (a\u00b1c)\/b (\u0645\u062e\u0631\u062c \u0645\u0634\u062a\u0631\u06a9)<br>\n \u0634\u0631\u0637 \u062a\u0639\u0631\u06cc\u0641: \u0645\u062e\u0631\u062c \u2260 \u06f0\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n (x\u00b2\u22129)\/(x\u22123) = (x+3)(x\u22123)\/(x\u22123) = x+3 (\u0628\u0631\u0627\u06cc x\u22603)<br>\n 2\/(x+1) + 3\/(x\u22121) = [2(x\u22121)+3(x+1)] \/ [(x+1)(x\u22121)]<br>\n = (5x+1)\/(x\u00b2\u22121)\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>\u0647\u0645\u06cc\u0634\u0647 \u0634\u0631\u0637 \u062a\u0639\u0631\u06cc\u0641 (\u0645\u062e\u0631\u062c \u2260 \u06f0) \u0631\u0627 \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0642\u0628\u0644 \u0627\u0632 \u062c\u0645\u0639\/\u062a\u0641\u0631\u06cc\u0642\u060c \u0645\u062e\u0631\u062c \u0645\u0634\u062a\u0631\u06a9 \u0628\u06af\u06cc\u0631\u06cc\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0628\u0631\u0627\u06cc \u0633\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646\u060c \u0627\u0628\u062a\u062f\u0627 \u0635\u0648\u0631\u062a \u0648 \u0645\u062e\u0631\u062c \u0631\u0627 \u062a\u062c\u0632\u06cc\u0647 \u06a9\u0646\u06cc\u062f.<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062a\u0642\u0633\u06cc\u0645 \u06a9\u0633\u0631 = \u0636\u0631\u0628 \u062f\u0631 \u0645\u0639\u06a9\u0648\u0633.<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0639\u0628\u0627\u0631\u0627\u062a \u06af\u0648\u06cc\u0627 \u0645\u062b\u0644 \u06a9\u0633\u0631\u0647\u0627\u06cc \u0639\u0627\u062f\u06cc \u0647\u0633\u062a\u0646\u062f\u060c \u0628\u0627 \u0627\u06cc\u0646 \u062a\u0641\u0627\u0648\u062a \u06a9\u0647 \u0635\u0648\u0631\u062a \u0648 \u0645\u062e\u0631\u062c \u0686\u0646\u062f\u062c\u0645\u0644\u0647\u200c\u0627\u06cc\u200c\u0627\u0646\u062f. \u0633\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 = \u062a\u062c\u0632\u06cc\u0647 + \u062d\u0630\u0641 \u0639\u0627\u0645\u0644 \u0645\u0634\u062a\u0631\u06a9.\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch7\" onchange=\"m9ToggleDone('ch7', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- =================== CHAPTER 8 =================== -->\n <div class=\"m9-card\" id=\"m9-ch8\" data-chid=\"ch8\">\n <div class=\"m9-card-header\" onclick=\"m9Toggle('m9-ch8')\" role=\"button\" tabindex=\"0\">\n <div class=\"m9-card-icon ci-indigo\">\n <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\">\n <rect x=\"4\" y=\"10\" width=\"16\" height=\"9\" rx=\"2\" stroke=\"#4c3dc4\" stroke-width=\"2\" fill=\"none\"\/>\n <path d=\"M8 10 L8 5 L16 5 L16 10\" stroke=\"#4c3dc4\" stroke-width=\"1.5\" fill=\"none\"\/>\n <line x1=\"12\" y1=\"5\" x2=\"12\" y2=\"2\" stroke=\"#4c3dc4\" stroke-width=\"1.5\"\/>\n <\/svg>\n <\/div>\n <div class=\"m9-card-title-wrap\">\n <div class=\"m9-card-chapter\">\u0641\u0635\u0644 \u0647\u0634\u062a\u0645<\/div>\n <div class=\"m9-card-title\">\u062d\u062c\u0645 \u0648 \u0645\u0633\u0627\u062d\u062a<\/div>\n <\/div>\n <span class=\"m9-card-badge m9-badge-pending\" id=\"badge-ch8\">\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647<\/span>\n <svg class=\"m9-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\n <\/div>\n <div class=\"m9-card-body\" role=\"region\">\n <div class=\"m9-card-body-inner\">\n <p class=\"m9-desc\">\u062f\u0631 \u0627\u06cc\u0646 \u0641\u0635\u0644 \u0628\u0627 \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u0633\u0627\u062d\u062a \u0627\u0634\u06a9\u0627\u0644 \u062f\u0648\u0628\u0639\u062f\u06cc \u0648 \u062d\u062c\u0645 \u0627\u062c\u0633\u0627\u0645 \u0633\u0647\u200c\u0628\u0639\u062f\u06cc \u0622\u0634\u0646\u0627 \u0645\u06cc\u200c\u0634\u0648\u06cc\u062f. \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\u06cc \u0627\u06cc\u0646 \u0641\u0635\u0644 \u062f\u0631 \u0627\u0645\u062a\u062d\u0627\u0646\u0627\u062a \u0628\u0633\u06cc\u0627\u0631 \u067e\u0631\u06a9\u0627\u0631\u0628\u0631\u062f \u0647\u0633\u062a\u0646\u062f.<\/p>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\u06cc \u0645\u0633\u0627\u062d\u062a \u0648 \u062d\u062c\u0645\n <\/div>\n <div class=\"m9-formula-box\">\n \u0645\u0631\u0628\u0639: S = a\u00b2 | \u0645\u062d\u06cc\u0637 = 4a<br>\n \u0645\u0633\u062a\u0637\u06cc\u0644: S = a\u00d7b | \u0645\u062d\u06cc\u0637 = 2(a+b)<br>\n \u0645\u062b\u0644\u062b: S = (a\u00d7h)\/2<br>\n \u062f\u0627\u06cc\u0631\u0647: S = \u03c0r\u00b2 | \u0645\u062d\u06cc\u0637 = 2\u03c0r<br>\n \u0630\u0648\u0632\u0646\u0642\u0647: S = (a+b)\/2 \u00d7 h<br>\n \u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501<br>\n \u0645\u06a9\u0639\u0628: V = a\u00b3 | S_\u06a9\u0644 = 6a\u00b2<br>\n \u0645\u06a9\u0639\u0628\u200c\u0645\u0633\u062a\u0637\u06cc\u0644: V = a\u00d7b\u00d7c | S = 2(ab+bc+ca)<br>\n \u0627\u0633\u062a\u0648\u0627\u0646\u0647: V = \u03c0r\u00b2h | S_\u062c\u0627\u0646\u0628\u06cc = 2\u03c0rh<br>\n \u0645\u062e\u0631\u0648\u0637: V = \u03c0r\u00b2h\/3 | S_\u062c\u0627\u0646\u0628\u06cc = \u03c0rl<br>\n \u06a9\u0631\u0647: V = 4\u03c0r\u00b3\/3 | S = 4\u03c0r\u00b2\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#f7a731\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\/><\/svg>\n \u0645\u062b\u0627\u0644\n <\/div>\n <div class=\"m9-example-box\">\n <strong>\u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647:<\/strong>\n \u0627\u0633\u062a\u0648\u0627\u0646\u0647\u200c\u0627\u06cc \u0628\u0647 \u0634\u0639\u0627\u0639 \u06f3 \u0648 \u0627\u0631\u062a\u0641\u0627\u0639 \u06f5:<br>\n V = \u03c0 \u00d7 \u06f9 \u00d7 \u06f5 = \u06f4\u06f5\u03c0 \u2248 \u06f1\u06f4\u06f1.\u06f3<br>\n \u06a9\u0631\u0647\u200c\u0627\u06cc \u0628\u0647 \u0634\u0639\u0627\u0639 \u06f6: V = 4\u03c0(216)\/3 = 288\u03c0 \u2248 \u06f9\u06f0\u06f4.\u06f7\n <\/div>\n <div class=\"m9-block-title\">\n <svg width=\"13\" height=\"13\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#ff6b6b\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"8\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"16\" x2=\"12.01\" y2=\"16\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0627\u0645\u062a\u062d\u0627\u0646\u06cc\n <\/div>\n <ul class=\"m9-tips-list\">\n <li><span class=\"m9-tip-dot\"><\/span>l \u062f\u0631 \u0645\u062e\u0631\u0648\u0637\u060c \u0627\u0631\u062a\u0641\u0627\u0639 \u0645\u0627\u06cc\u0644 \u0627\u0633\u062a \u0646\u0647 \u0627\u0631\u062a\u0641\u0627\u0639 \u0639\u0645\u0648\u062f\u06cc: l = \u221a(r\u00b2 + h\u00b2)<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u062f\u0631 \u0645\u0633\u0627\u0626\u0644: \u0627\u06af\u0631 \u0642\u0637\u0631 \u062f\u0627\u062f\u0647 \u0634\u062f\u060c \u0634\u0639\u0627\u0639 = \u0642\u0637\u0631\/\u06f2<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u0645\u0633\u0627\u062d\u062a \u06a9\u0644 = \u0645\u0633\u0627\u062d\u062a \u062c\u0627\u0646\u0628\u06cc + \u0645\u0633\u0627\u062d\u062a \u0642\u0627\u0639\u062f\u0647(\u0647\u0627)<\/li>\n <li><span class=\"m9-tip-dot\"><\/span>\u03c0 \u2248 \u06f3.\u06f1\u06f4 \u06cc\u0627 \u06f2\u06f2\/\u06f7 \u0628\u0633\u062a\u0647 \u0628\u0647 \u0633\u0624\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/li>\n <\/ul>\n <div class=\"m9-summary-box\">\n <strong>\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc:<\/strong> \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\u06cc \u062d\u062c\u0645 \u0648 \u0645\u0633\u0627\u062d\u062a \u0631\u0627 \u062d\u062a\u0645\u0627\u064b \u062d\u0641\u0638 \u06a9\u0646\u06cc\u062f. \u062f\u0631 \u0633\u0624\u0627\u0644\u0627\u062a \u062a\u0631\u06a9\u06cc\u0628\u06cc (\u0645\u062b\u0644\u0627\u064b \u0638\u0631\u0641 \u0628\u0627 \u062f\u0631\u067e\u0648\u0634) \u0645\u0633\u0627\u062d\u062a\u200c\u0647\u0627 \u0631\u0627 \u062c\u062f\u0627\u06af\u0627\u0646\u0647 \u062d\u0633\u0627\u0628 \u06a9\u0646\u06cc\u062f.\n <\/div>\n <div class=\"m9-learned-row\">\n <span class=\"m9-learned-label\">\u0627\u06cc\u0646 \u0641\u0635\u0644 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713<\/span>\n <label class=\"m9-toggle\" aria-label=\"\u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u06cc\u0627\u062f\u06af\u0631\u0641\u062a\u0647\u200c\u0634\u062f\u0647\">\n <input type=\"checkbox\" id=\"tog-ch8\" onchange=\"m9ToggleDone('ch8', this.checked)\">\n <span class=\"m9-toggle-slider\"><\/span>\n <\/label>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- FORMULA HUB -->\n <div class=\"m9-section-label\">\n <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#7a7a9a\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><line x1=\"4\" y1=\"9\" x2=\"20\" y2=\"9\"\/><line x1=\"4\" y1=\"15\" x2=\"20\" y2=\"15\"\/><line x1=\"10\" y1=\"3\" x2=\"8\" y2=\"21\"\/><line x1=\"16\" y1=\"3\" x2=\"14\" y2=\"21\"\/><\/svg>\n \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\u06cc \u0645\u0647\u0645 \u0647\u0631 \u0641\u0635\u0644\n <\/div>\n\n <div class=\"m9-formula-hub\">\n <h2>\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#6c63ff\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><line x1=\"4\" y1=\"9\" x2=\"20\" y2=\"9\"\/><line x1=\"4\" y1=\"15\" x2=\"20\" y2=\"15\"\/><line x1=\"10\" y1=\"3\" x2=\"8\" y2=\"21\"\/><line x1=\"16\" y1=\"3\" x2=\"14\" y2=\"21\"\/><\/svg>\n \u062c\u062f\u0648\u0644 \u062c\u0627\u0645\u0639 \u0641\u0631\u0645\u0648\u0644\u200c\u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631\n <\/h2>\n <div class=\"m9-formula-grid\">\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0647\u0627<\/span>\n <span class=\"fi-val\">n(A\u222aB) = n(A)+n(B)\u2212n(A\u2229B)<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0642\u062f\u0631\u0645\u0637\u0644\u0642<\/span>\n <span class=\"fi-val\">|a| \u2265 0 \u0647\u0645\u06cc\u0634\u0647<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0636\u0631\u0628 \u062a\u0648\u0627\u0646\u200c\u0647\u0627<\/span>\n <span class=\"fi-val\">a\u1d50 \u00d7 a\u207f = a\u1d50\u207a\u207f<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0645\u0631\u0628\u0639 \u0645\u062c\u0645\u0648\u0639<\/span>\n <span class=\"fi-val\">(a+b)\u00b2 = a\u00b2+2ab+b\u00b2<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0645\u0627\u0628\u0647\u200c\u0627\u0644\u062a\u0641\u0627\u0648\u062a<\/span>\n <span class=\"fi-val\">a\u00b2\u2212b\u00b2 = (a+b)(a\u2212b)<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0634\u06cc\u0628 \u062e\u0637<\/span>\n <span class=\"fi-val\">m = (y\u2082\u2212y\u2081)\/(x\u2082\u2212x\u2081)<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0645\u0633\u0627\u062d\u062a \u062f\u0627\u06cc\u0631\u0647<\/span>\n <span class=\"fi-val\">S = \u03c0r\u00b2<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u062d\u062c\u0645 \u06a9\u0631\u0647<\/span>\n <span class=\"fi-val\">V = (4\/3)\u03c0r\u00b3<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0645\u062b\u0644\u062b \u0632\u0648\u0627\u06cc\u0627<\/span>\n <span class=\"fi-val\">\u2220A + \u2220B + \u2220C = 180\u00b0<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u062d\u062c\u0645 \u0627\u0633\u062a\u0648\u0627\u0646\u0647<\/span>\n <span class=\"fi-val\">V = \u03c0r\u00b2h<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u062d\u062c\u0645 \u0645\u062e\u0631\u0648\u0637<\/span>\n <span class=\"fi-val\">V = (1\/3)\u03c0r\u00b2h<\/span>\n <\/div>\n <div class=\"m9-formula-item\">\n <span class=\"fi-label\">\u0632\u06cc\u0631\u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0647\u0627<\/span>\n <span class=\"fi-val\">\u062a\u0639\u062f\u0627\u062f = 2\u207f<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <!-- NIGHT REVIEW -->\n <div class=\"m9-section-label\">\n <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#7a7a9a\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z\"\/><\/svg>\n \u0645\u0631\u0648\u0631 \u0633\u0631\u06cc\u0639 \u0634\u0628 \u0627\u0645\u062a\u062d\u0627\u0646\n <\/div>\n\n <div class=\"m9-night-card\">\n <h2>\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z\"\/><\/svg>\n \u0646\u06a9\u0627\u062a \u0637\u0644\u0627\u06cc\u06cc \u0634\u0628 \u0627\u0645\u062a\u062d\u0627\u0646\n <\/h2>\n <ul class=\"m9-night-list\">\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u0627\u062a\u062d\u0627\u062f\u0647\u0627\u06cc \u062c\u0628\u0631\u06cc \u0631\u0627 \u0645\u0631\u0648\u0631 \u06a9\u0646: (a\u00b1b)\u00b2, a\u00b2\u2212b\u00b2\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u0641\u0631\u0645\u0648\u0644 n(A\u222aB) \u0631\u0627 \u0641\u0631\u0627\u0645\u0648\u0634 \u0646\u06a9\u0646\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u0645\u062c\u0645\u0648\u0639 \u0632\u0648\u0627\u06cc\u0627\u06cc \u0645\u062b\u0644\u062b = \u06f1\u06f8\u06f0 \u062f\u0631\u062c\u0647\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u0642\u0648\u0627\u0646\u06cc\u0646 \u062a\u0648\u0627\u0646: \u0636\u0631\u0628 = \u062c\u0645\u0639 \u062a\u0648\u0627\u0646\u060c \u062a\u0642\u0633\u06cc\u0645 = \u062a\u0641\u0631\u06cc\u0642 \u062a\u0648\u0627\u0646\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u062f\u0631 \u0639\u0628\u0627\u0631\u062a \u06af\u0648\u06cc\u0627: \u0634\u0631\u0637 \u062a\u0639\u0631\u06cc\u0641 \u0628\u0646\u0648\u06cc\u0633 (\u0645\u062e\u0631\u062c \u2260 \u06f0)\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u0634\u0639\u0627\u0639 \u0627\u0631\u062a\u0641\u0627\u0639 \u0645\u0627\u06cc\u0644 \u0645\u062e\u0631\u0648\u0637: l = \u221a(r\u00b2 + h\u00b2)\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u221aa\u00b2 = |a| \u0646\u0647 a (\u062a\u0648\u062c\u0647 \u0628\u0647 \u0642\u062f\u0631\u0645\u0637\u0644\u0642)\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u0645\u0639\u0627\u062f\u0644\u0647 \u062e\u0637\u06cc: \u0628\u0631\u0627\u06cc \u0631\u0633\u0645 \u0646\u0645\u0648\u062f\u0627\u0631 \u062f\u0648 \u0646\u0642\u0637\u0647 \u06a9\u0627\u0641\u06cc \u0627\u0633\u062a\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u0627\u0639\u062f\u0627\u062f \u063a\u06cc\u0631\u06af\u0648\u06cc\u0627 \u0627\u0639\u0634\u0627\u0631 \u0646\u0627\u0645\u062a\u0646\u0627\u0648\u0628 \u0646\u0627\u0645\u062d\u062f\u0648\u062f \u062f\u0627\u0631\u0646\u062f\n <\/li>\n <li>\n <span class=\"ni-icon\">\n <svg width=\"15\" height=\"15\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#c07800\" stroke-width=\"2.5\" stroke-linecap=\"round\" aria-hidden=\"true\"><polyline points=\"9 11 12 14 22 4\"\/><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"\/><\/svg>\n <\/span>\n \u062f\u0631 \u0627\u062b\u0628\u0627\u062a \u0647\u0646\u062f\u0633\u06cc: \u0647\u0631 \u0645\u0631\u062d\u0644\u0647 \u0628\u0627\u06cc\u062f \u0645\u0633\u062a\u0646\u062f \u0628\u0627\u0634\u062f\n <\/li>\n <\/ul>\n <\/div>\n\n <!-- QUIZ SECTION -->\n <div class=\"m9-section-label\">\n <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#7a7a9a\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><path d=\"M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3\"\/><line x1=\"12\" y1=\"17\" x2=\"12.01\" y2=\"17\"\/><\/svg>\n \u062a\u0645\u0631\u06cc\u0646\u200c\u0647\u0627\u06cc \u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc \u0648 \u062a\u0633\u062a\u06cc\n <\/div>\n\n <div class=\"m9-quiz-card\">\n <h2>\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#6c63ff\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><path d=\"M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3\"\/><line x1=\"12\" y1=\"17\" x2=\"12.01\" y2=\"17\"\/><\/svg>\n \u062a\u0633\u062a\u200c\u0647\u0627\u06cc \u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc\n <\/h2>\n\n <!-- Q1 -->\n <div class=\"m9-quiz-q\" id=\"m9q1\">\n <p>\u06f1. \u0627\u06af\u0631 A = {\u06f1\u060c \u06f2\u060c \u06f3} \u0648 B = {\u06f3\u060c \u06f4\u060c \u06f5} \u0628\u0627\u0634\u0646\u062f\u060c n(A \u222a B) \u0628\u0631\u0627\u0628\u0631 \u0627\u0633\u062a \u0628\u0627:<\/p>\n <div class=\"m9-quiz-opts\">\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q1',false,'\u06f5 \u0635\u062d\u06cc\u062d \u0627\u0633\u062a. A\u222aB = {\u06f1,\u06f2,\u06f3,\u06f4,\u06f5}')\">\u0627\u0644\u0641) \u06f6<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q1',true,'\u06f5 \u0635\u062d\u06cc\u062d \u0627\u0633\u062a. A\u222aB = {\u06f1,\u06f2,\u06f3,\u06f4,\u06f5}')\">\u0628) \u06f5<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q1',false,'\u06f5 \u0635\u062d\u06cc\u062d \u0627\u0633\u062a. A\u222aB = {\u06f1,\u06f2,\u06f3,\u06f4,\u06f5}')\">\u062c) \u06f4<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q1',false,'\u06f5 \u0635\u062d\u06cc\u062d \u0627\u0633\u062a. A\u222aB = {\u06f1,\u06f2,\u06f3,\u06f4,\u06f5}')\">\u062f) \u06f7<\/button>\n <\/div>\n <div class=\"m9-quiz-feedback\" id=\"fb-m9q1\"><\/div>\n <\/div>\n\n <!-- Q2 -->\n <div class=\"m9-quiz-q\" id=\"m9q2\">\n <p>\u06f2. \u062d\u0627\u0635\u0644 \u06f2\u00b3 \u00d7 \u06f2\u2074 \u06a9\u062f\u0627\u0645 \u0627\u0633\u062a\u061f<\/p>\n <div class=\"m9-quiz-opts\">\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q2',false,'\u06f2\u2077=\u06f1\u06f2\u06f8 \u0627\u0633\u062a\u060c \u0686\u0648\u0646 \u062a\u0648\u0627\u0646\u200c\u0647\u0627 \u062c\u0645\u0639 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f')\">\u0627\u0644\u0641) \u06f2\u00b9\u00b2<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q2',false,'\u06f2\u2077=\u06f1\u06f2\u06f8 \u0627\u0633\u062a\u060c \u0686\u0648\u0646 \u062a\u0648\u0627\u0646\u200c\u0647\u0627 \u062c\u0645\u0639 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f')\">\u0628) \u06f4\u2077<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q2',true,'\u06f2\u2077=\u06f1\u06f2\u06f8 \u0627\u0633\u062a\u060c \u0686\u0648\u0646 \u062a\u0648\u0627\u0646\u200c\u0647\u0627 \u062c\u0645\u0639 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f')\">\u062c) \u06f2\u2077<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q2',false,'\u06f2\u2077=\u06f1\u06f2\u06f8 \u0627\u0633\u062a\u060c \u0686\u0648\u0646 \u062a\u0648\u0627\u0646\u200c\u0647\u0627 \u062c\u0645\u0639 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f')\">\u062f) \u06f2\u2076<\/button>\n <\/div>\n <div class=\"m9-quiz-feedback\" id=\"fb-m9q2\"><\/div>\n <\/div>\n\n <!-- Q3 -->\n <div class=\"m9-quiz-q\" id=\"m9q3\">\n <p>\u06f3. (x + \u06f4)\u00b2 \u0628\u0631\u0627\u0628\u0631 \u06a9\u062f\u0627\u0645 \u0627\u0633\u062a\u061f<\/p>\n <div class=\"m9-quiz-opts\">\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q3',false,'x\u00b2+8x+16 \u0627\u0633\u062a: (a+b)\u00b2=a\u00b2+2ab+b\u00b2')\">\u0627\u0644\u0641) x\u00b2 + \u06f1\u06f6<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q3',true,'x\u00b2+8x+16 \u0627\u0633\u062a: (a+b)\u00b2=a\u00b2+2ab+b\u00b2')\">\u0628) x\u00b2 + \u06f8x + \u06f1\u06f6<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q3',false,'x\u00b2+8x+16 \u0627\u0633\u062a: (a+b)\u00b2=a\u00b2+2ab+b\u00b2')\">\u062c) x\u00b2 + \u06f4x + \u06f1\u06f6<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q3',false,'x\u00b2+8x+16 \u0627\u0633\u062a: (a+b)\u00b2=a\u00b2+2ab+b\u00b2')\">\u062f) x\u00b2 \u2212 \u06f8x + \u06f1\u06f6<\/button>\n <\/div>\n <div class=\"m9-quiz-feedback\" id=\"fb-m9q3\"><\/div>\n <\/div>\n\n <!-- Q4 -->\n <div class=\"m9-quiz-q\" id=\"m9q4\">\n <p>\u06f4. \u0634\u06cc\u0628 \u062e\u0637\u06cc \u06a9\u0647 \u0627\u0632 \u0646\u0642\u0627\u0637 (\u06f1\u060c \u06f2) \u0648 (\u06f3\u060c \u06f8) \u0645\u06cc\u200c\u06af\u0630\u0631\u062f \u0686\u0642\u062f\u0631 \u0627\u0633\u062a\u061f<\/p>\n <div class=\"m9-quiz-opts\">\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q4',false,'m = (8-2)\/(3-1) = 6\/2 = 3')\">\u0627\u0644\u0641) \u06f2<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q4',false,'m = (8-2)\/(3-1) = 6\/2 = 3')\">\u0628) \u06f4<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q4',true,'m = (8-2)\/(3-1) = 6\/2 = 3')\">\u062c) \u06f3<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q4',false,'m = (8-2)\/(3-1) = 6\/2 = 3')\">\u062f) \u06f6<\/button>\n <\/div>\n <div class=\"m9-quiz-feedback\" id=\"fb-m9q4\"><\/div>\n <\/div>\n\n <!-- Q5 -->\n <div class=\"m9-quiz-q\" id=\"m9q5\">\n <p>\u06f5. \u062d\u062c\u0645 \u06a9\u0631\u0647\u200c\u0627\u06cc \u0628\u0627 \u0634\u0639\u0627\u0639 \u06f3 (\u0628\u0631\u062d\u0633\u0628 \u03c0) \u06a9\u062f\u0627\u0645 \u0627\u0633\u062a\u061f<\/p>\n <div class=\"m9-quiz-opts\">\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q5',false,'V=(4\/3)\u03c0(3)\u00b3=(4\/3)\u03c0\u00d727=36\u03c0')\">\u0627\u0644\u0641) \u06f2\u06f7\u03c0<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q5',true,'V=(4\/3)\u03c0(3)\u00b3=(4\/3)\u03c0\u00d727=36\u03c0')\">\u0628) \u06f3\u06f6\u03c0<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q5',false,'V=(4\/3)\u03c0(3)\u00b3=(4\/3)\u03c0\u00d727=36\u03c0')\">\u062c) \u06f1\u06f2\u03c0<\/button>\n <button class=\"m9-quiz-opt\" onclick=\"m9Answer(this,'m9q5',false,'V=(4\/3)\u03c0(3)\u00b3=(4\/3)\u03c0\u00d727=36\u03c0')\">\u062f) \u06f4\u06f8\u03c0<\/button>\n <\/div>\n <div class=\"m9-quiz-feedback\" id=\"fb-m9q5\"><\/div>\n <\/div>\n\n <div class=\"m9-quiz-score\" id=\"m9QuizScore\" style=\"display:none;\"><\/div>\n <\/div>\n\n<\/div><!-- #math9-widget -->\n\n<script>\n(function() {\n 'use strict';\n var W = document.getElementById('math9-widget');\n if (!W) return;\n\n var CHAPTERS = ['ch1','ch2','ch3','ch4','ch5','ch6','ch7','ch8'];\n var TOTAL = CHAPTERS.length;\n var quizAnswered = {};\n var quizCorrect = 0;\n\n \/\/ ======= LOAD STATE =======\n function loadState() {\n CHAPTERS.forEach(function(id) {\n var saved = false;\n try { saved = localStorage.getItem('m9_' + id) === '1'; } catch(e) {}\n if (saved) {\n var tog = W.querySelector('#tog-' + id);\n if (tog) { tog.checked = true; m9ApplyDone(id, true, false); }\n }\n });\n updateProgress();\n }\n\n \/\/ ======= TOGGLE ACCORDION =======\n window.m9Toggle = function(cardId) {\n var card = W.querySelector('#' + cardId);\n if (!card) return;\n var isOpen = card.classList.contains('m9-open');\n \/\/ close all\n W.querySelectorAll('.m9-card.m9-open').forEach(function(c) {\n c.classList.remove('m9-open');\n var h = c.querySelector('.m9-card-header');\n if (h) h.setAttribute('aria-expanded','false');\n });\n if (!isOpen) {\n card.classList.add('m9-open');\n var header = card.querySelector('.m9-card-header');\n if (header) header.setAttribute('aria-expanded','true');\n }\n };\n\n \/\/ keyboard support\n W.querySelectorAll('.m9-card-header').forEach(function(h) {\n h.addEventListener('keydown', function(e) {\n if (e.key === 'Enter' || e.key === ' ') {\n e.preventDefault();\n var card = h.closest('.m9-card');\n if (card) m9Toggle(card.id);\n }\n });\n });\n\n \/\/ ======= TOGGLE DONE =======\n window.m9ToggleDone = function(chid, checked) {\n m9ApplyDone(chid, checked, true);\n updateProgress();\n };\n\n function m9ApplyDone(chid, checked, save) {\n var card = W.querySelector('#m9-' + chid);\n var badge = W.querySelector('#badge-' + chid);\n if (card) {\n if (checked) {\n card.classList.add('m9-done');\n } else {\n card.classList.remove('m9-done');\n }\n }\n if (badge) {\n if (checked) {\n badge.textContent = '\u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u0645 \u2713';\n badge.className = 'm9-card-badge m9-badge-done';\n } else {\n badge.textContent = '\u062f\u0631 \u062d\u0627\u0644 \u0645\u0637\u0627\u0644\u0639\u0647';\n badge.className = 'm9-card-badge m9-badge-pending';\n }\n }\n if (save) {\n try { localStorage.setItem('m9_' + chid, checked ? '1' : '0'); } catch(e) {}\n }\n }\n\n \/\/ ======= PROGRESS =======\n function updateProgress() {\n var done = 0;\n CHAPTERS.forEach(function(id) {\n var tog = W.querySelector('#tog-' + id);\n if (tog && tog.checked) done++;\n });\n var pct = Math.round((done \/ TOTAL) * 100);\n\n \/\/ bar\n var bar = W.querySelector('#m9BarFill');\n if (bar) bar.style.width = pct + '%';\n\n \/\/ ring\n var ring = W.querySelector('#m9RingBar');\n if (ring) {\n var circ = 2 * Math.PI * 35;\n var offset = circ - (pct \/ 100) * circ;\n ring.style.strokeDasharray = circ;\n ring.style.strokeDashoffset = offset;\n }\n\n \/\/ pct text\n var pctEl = W.querySelector('#m9PctText');\n if (pctEl) pctEl.textContent = pct + '\u066a';\n\n \/\/ label\n var lbl = W.querySelector('#m9ProgressLabel');\n if (lbl) lbl.textContent = done + ' \u0627\u0632 ' + TOTAL + ' \u0641\u0635\u0644 \u062a\u06a9\u0645\u06cc\u0644 \u0634\u062f\u0647';\n }\n\n \/\/ ======= RESET =======\n window.m9ResetProgress = function() {\n if (!confirm('\u0622\u06cc\u0627 \u0627\u0632 \u0628\u0627\u0632\u0646\u0634\u0627\u0646\u06cc \u067e\u06cc\u0634\u0631\u0641\u062a \u0645\u0637\u0645\u0626\u0646 \u0647\u0633\u062a\u06cc\u062f\u061f')) return;\n CHAPTERS.forEach(function(id) {\n try { localStorage.removeItem('m9_' + id); } catch(e) {}\n var tog = W.querySelector('#tog-' + id);\n if (tog) { tog.checked = false; }\n m9ApplyDone(id, false, false);\n });\n updateProgress();\n };\n\n \/\/ ======= QUIZ =======\n window.m9Answer = function(btn, qid, correct, explanation) {\n if (quizAnswered[qid]) return;\n quizAnswered[qid] = true;\n var qEl = W.querySelector('#' + qid);\n if (!qEl) return;\n var opts = qEl.querySelectorAll('.m9-quiz-opt');\n opts.forEach(function(o) {\n o.disabled = true;\n o.style.cursor = 'default';\n });\n if (correct) {\n btn.classList.add('m9-correct');\n quizCorrect++;\n } else {\n btn.classList.add('m9-wrong');\n \/\/ find correct\n var allBtns = qEl.querySelectorAll('.m9-quiz-opt');\n \/\/ highlight the btn that is correct\n }\n var fb = W.querySelector('#fb-' + qid);\n if (fb) {\n fb.textContent = (correct ? '\u2713 \u062f\u0631\u0633\u062a! ' : '\u2717 \u0627\u0634\u062a\u0628\u0627\u0647! ') + explanation;\n fb.className = 'm9-quiz-feedback show ' + (correct ? 'ok' : 'err');\n }\n \/\/ check if all answered\n var totalQ = 5;\n if (Object.keys(quizAnswered).length >= totalQ) {\n var scoreEl = W.querySelector('#m9QuizScore');\n if (scoreEl) {\n scoreEl.style.display = 'block';\n var emoji = quizCorrect >= 4 ? '\ud83c\udfc6 \u0639\u0627\u0644\u06cc!' : quizCorrect >= 3 ? 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