Question

Помогите решить!!Срочно!!​

Answer 1

$frac{2}{y^{2}-yx} - frac{2}{yx-x^{2}} = frac{2}{y(y-x)} - frac{2}{x(y-x)} = frac{2x-2y}{xy(y-x)} = frac{-2(-x+y)}{xy(y-x)} = -frac{2}{xy}$

При x = 2; y = -3:

$-frac{2}{2*(-3)} = frac{-2}{-6} = frac{2}{6} = frac{1}{3}$

Ответ: $frac{1}{3}$

Answer 2

спасибо