这两题怎么做? 要算式!!! 10
5个回答
展开全部
[(x+y)^2]^3*[(x+y)^3]^4
=(x+y)^6*(x+y)^12
=(x+y)^18
(3x^n-5y^m)(x^n+2y^m)
=3x^2n+6x^ny^m-5x^ny^m-10y^2m
=3x^2n+x^ny^m-10y^2m
=(x+y)^6*(x+y)^12
=(x+y)^18
(3x^n-5y^m)(x^n+2y^m)
=3x^2n+6x^ny^m-5x^ny^m-10y^2m
=3x^2n+x^ny^m-10y^2m
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询