Question

Упростите выражение
x^2-y^2/2xy*2y/x-y

Answer 1

$frac{x^2-y^2}{2xy}cdot frac{2y}{x-y}=frac{(x-y)(x+y)cdot 2y}{2xycdot (x-y)}=frac{x+y}{x}.$