(x2+y2)(x2-y2)化简
问题描述:
(x2+y2)(x2-y2)化简
答
(x2+y2)(x2-y2)
=X^4-y^4
(x2+y2)(x2-y2)化简
(x2+y2)(x2-y2)
=X^4-y^4