Question

plz give answer soon as possible for question number 57
no spam answer answer
step wise answer

Answer 1

x^4-y^4+2x^3-2xy^3
(x^2-y^2)(x^2+y^2)+2xy (x^2-y^2)
(x^2-y^2)(x^2+y^2+2xy)
(x-y)(x+y)(x+y)^2
(x-y)(x+y)^3