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November 2021 1 19 Report

Помогите пожалуйста срочно нужно сегодня ПОЖАЛУЙСТА СДАВАТЬ ЧЕРЕЗ ЧАС ДАМ 80 БАЛЛОВ
Выполните действие:
1)(n/m^2 + n^2/m^3):(m^2/3n^2 + m/3n)
2)x-y/x - 5y/x^2 * x^2-xy/5y

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NNNLLL54

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$1)\; \; \Big(\dfrac{n}{m^2}+\dfrac{n^2}{m^3}\Big):\Big(\dfrac{m^2}{3n^2}+\dfrac{m}{3n}\Big)=\dfrac{mn+n^2}{m^3}:\dfrac{m^2+mn}{3n^2}=\\\\\\=\dfrac{n(m+n)}{m^3}\cdot \dfrac{3n^2}{m(m+n)}=\dfrac{3n^3}{m^4}$

$2)\; \; \dfrac{x-y}{x}-\dfrac{5y}{x^2}\cdot \dfrac{x^2-xy}{5y}=\dfrac{x-y}{x}-\dfrac{5y\, \cdot \, x\, (x-y)}{x^2\, \cdot \, 5y}=\dfrac{x-y}{x}-\dfrac{x-y}{x}=0$

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zhannadkru April 2022 | 0 Ответы

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