Question

Помогите пожалуйста очень срочно!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
х/x+y : (x/x+y - x-y/x)

Answer 1

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