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

Question

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

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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