Question

Выполните действие: y^2/(x^2- y^2) × x+y/y

Answer 1

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