Question

ПОМОГИТЕ ПРОШУ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

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

(x^2-y^2)^2/x^2-y^2 : xy/x^2-y^2 =

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