Question

Срочно помогите плиз! x/xy-y ÷ y/y²-1

Answer 1

$(frac{x}{xy}-y) :( frac{y}{y^2}-1)= (frac{1}{y}-y) : (frac{1}{y}-1)=$

$= frac{1-y^2}{y}: frac{1-y}{y}= frac{(1-y)(1+y)}{y}cdot frac{y}{1-y}=(1+y)=1+y$

Answer 2

СПАСИБО БОЛЬШОЕ!