Упростите выражение (1/x-y +1/x+y) / x/x^2-y^2

Question

Упростите выражение (1/x-y +1/x+y) / x/x^2-y^2

Answer 1

((х+у+х-у)/(x^2-y^2))/(x/( x^2-y^2)) = (2x/(x^2-y^2))* ((x^2-y^2)/x) = x!!!