计算(x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)
4个回答
展开全部
(x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)
=(x-y)(x+y){(x+y)(x-y)-(x^2+y^2)}
=(x-y)(x+y)(x^2-y^2-x^2-y^2)
=-2y^2(x-y)(x+y)
=(x-y)(x+y){(x+y)(x-y)-(x^2+y^2)}
=(x-y)(x+y)(x^2-y^2-x^2-y^2)
=-2y^2(x-y)(x+y)
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
(x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)
=(x²-y²)(x²-y²-x²-y²)
=(x²-y²)(-4y²)
=4y^4-4x²y²
=(x²-y²)(x²-y²-x²-y²)
=(x²-y²)(-4y²)
=4y^4-4x²y²
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
(x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)
=[(x+y)(x-y)]^2-(x^2-y^2)(x^2+y^2)
=x^4-2x^2y^2+y^4-x^4+y^4
=2y^4-2x^2y^2
=[(x+y)(x-y)]^2-(x^2-y^2)(x^2+y^2)
=x^4-2x^2y^2+y^4-x^4+y^4
=2y^4-2x^2y^2
本回答被提问者采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
2y^4-2x^2y^2
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