Question

Упростить выражение:

Answer 1

$(\frac{y^2}{x(x^2-y^2)}+\frac{1}{x+y}^{(x}):(\frac{x-y}{x(x+y)}^{(y}-\frac{x}{y(y+x)}^{(x})=\\\\(\frac{y^2}{x(x+y)(x-y)}+\frac{x}{x(x+y)}^{(x-y}):(\frac{xy-y^2-x^2}{xy(x+y)})=\\\\(\frac{y^2+x^2-xy}{x(x+y)(x-y)})*(\frac{xy(x+y)}{-(y^2+x^2-xy)})=\\\\-(\frac{y}{x-y})\\\\Otvet:\frac{y}{y-x}.$