Question

помогите прошу.упростить

Answer 1

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