(x+9)...

kusv10558 @kusv10558

July 2022 1 0 Report

выполните вычитание

3x- (14x^2)/(x-1)
x^2/(x^2-81)-x/(x+9)

Answers & Comments

DariosI

Verified answer

$3x-\frac{14x^2}{x-1}=\frac{3x(x-1)-14x^2}{x-1}=\frac{3x^2-3x-14x^2}{x-1}=-\frac{11x^2+3x}{x-1}$

$\frac{x^2}{x^2-81}-\frac{x}{x+9}=\frac{x^2-x(x-9)}{(x-9)(x+9)}=\frac{x^2-x^2+9x}{x^2-81}=\frac{9x}{x^2-81}$

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