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Turkmenistan
119. Найдите длину медианы \( C E \) равнобедренного прямо- угольного треугольника \( A B C\left(\angle C=90^{\circ}\right) \), если \( A B=10 \).
Geometry Jan 15, 2025
a) \( x^{3}-7 x-6=0 \) b) \( x^{3}+9 x^{2}+11 x-21=0 \)
Algebra Jan 15, 2025
Что такое круг?
Geometry Jan 14, 2025
a) \( 2 \sin \alpha \sin 2 \alpha \sin 3 \alpha \) b) \( 4 \sin 25^{\circ} \cos 15^{\circ} \sin 5^{\circ} \) c) \( 8 \cos 1^{\circ} \cos 2^{\circ} \cos 4^{\circ} \cos 8^{\circ} \) d) \( \cos \alpha \cos (\alpha+2) \) e) \( 8 \cos (\alpha-\beta) \cos (\alpha-\gamma) \cos (\gamma-\beta) \)
Trigonometry Jan 14, 2025
284. Разложите многочлен на множители, пользуясь формула- ми сокращённого умножения: \( \begin{array}{lll}\text { a) } x^{3}-1 ; & \text { д) } y^{3}+1 ; & \text { и) } 4 x^{2}-9 ; \\ \text { б) } n^{4}-1 ; & \text { е) } k^{6}-1 ; & \text { к) } 9 z^{2}-25 ; \\ \text { в) } a^{12}-1 ; & \text { ж) } x^{4}-16 ; & \text { л) } 4 x^{2}-12 x y+9 y^{2} \\ \text { г) } m^{8}-1 ; & \text { з) } t^{8}-256 ; & \text { м) } 9 a^{2}+24 a b+16 b^{2}\end{array} \)
Algebra Jan 14, 2025
268. Deňlemeleri çözün̆: \( \begin{array}{lll}\text { a) } x^{2}-4=0 ; & \text { c) } a^{2}-0,25=0 ; & \text { e) } 4 x^{2}-9=0 \\ \text { b) } \frac{1}{9}-y^{2}=0 ; & \text { d) } 25 x^{2}-4=0 ; & \text { ä) } 81 x^{2}=16\end{array} \)
Algebra Jan 14, 2025
Решите уравнение: \( \sqrt{x + 7} = 5 \)
Algebra Jan 13, 2025
12. \( \frac{2-\frac{2}{4}}{1-\frac{1}{1-\frac{3}{3}}}= \)
Pre Algebra Jan 09, 2025
b) \( (2-3 x)^{2}=(x+1)(x+2) \)
Algebra Jan 08, 2025
a) \( 2 x(4-3 x)=(3+2 x)(3-2 x) \)
Algebra Jan 08, 2025
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