Subject :IMO Class : Class 9
x12- y12 =
(A) (x - y)(x2 + xy + y2)(x + y)(x2 -xy + y2)(x2 + y2)(x4- x2y2 + y4)
(B) (x + y)(x2 -xy + y2)(x + y)(x2 - xy + y2)(x2 + y2)(x4- x2y2 + y4)
(C) (x + y)(x2 + xy - y2)(x + y)(x2 -xy + y2)(x2 + y2)(x4- x2y2 + y4)
(D) (x- y)(x2 - xy + y2)(x + y)(x2 - xy + y2)(x2 + y2)(x4 - x2y2 + y4)