Срочнооо#!!! упростите (y/(x^2-y^2))/(y/(x-y)+x/(x+y))

Question

Срочнооо#!!!
упростите (y/(x^2-y^2))/(y/(x-y)+x/(x+y))

Answer 1

Решение:
(x-y)^2 - x(x-2y) = x^2 - 2xy + y^2 - x^2 + 2xy = y^2