X/(x+y) + y/(x-y) Упростите выражение

Question

X/(x+y) + y/(x-y) Упростите выражение

Answer 1

=x(x-y)+y(x+y)/(x-y)(x+y)=x^2-xy+ху+у^2/x^2-y^2=x^2+y^2/x^2-y^2