(x²-y²)(x²+y²)(xy) 等于多少
问题描述:
(x²-y²)(x²+y²)(xy) 等于多少
答
(x²-y²)(x²+y²)(xy)
=x5y4+x4y5
(x²-y²)(x²+y²)(xy) 等于多少
(x²-y²)(x²+y²)(xy)
=x5y4+x4y5