化简下面式子:
(1)4(x-y)^2+3(x-y)^2-5(x-y)^2(2)4(x-y)^2+3(x-y)^2-5(x-y)^2(3)4(x-y)^3+3(x-y)^3-5(x-y)...
(1) 4(x-y)^2+3(x-y)^2-5(x-y)^2
(2) 4(x-y)^2+3(x-y)^2-5(x-y)^2
(3) 4(x-y)^3+3(x-y)^3-5(x-y)^3
(4) 4(x-y)^3+3(x-y)^3-5(x-y)^3
1和2要有两种化简方式,3和4一样 展开
(2) 4(x-y)^2+3(x-y)^2-5(x-y)^2
(3) 4(x-y)^3+3(x-y)^3-5(x-y)^3
(4) 4(x-y)^3+3(x-y)^3-5(x-y)^3
1和2要有两种化简方式,3和4一样 展开
4个回答
展开全部
七年级的吧?
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
(1) 4(x-y)^2+3(x-y)^2-5(x-y)^2
=(x-y)^2(4+3-5)
=2(x-y)^2
(2) 4(x-y)^2+3(x-y)^2-5(x-y)^2
=(x-y)^2(4+3-5)
=2(x-y)^2
(和1有区别么?)
(3) 4(x-y)^3+3(x-y)^3-5(x-y)^3
=(x-y)^3(4+3-5)
=2 (x-y)^3
(4) 4(x-y)^3+3(x-y)^3-5(x-y)^3
=(x-y)^3(4+3-5)
=2 (x-y)^3
(和3有区别么?)
=(x-y)^2(4+3-5)
=2(x-y)^2
(2) 4(x-y)^2+3(x-y)^2-5(x-y)^2
=(x-y)^2(4+3-5)
=2(x-y)^2
(和1有区别么?)
(3) 4(x-y)^3+3(x-y)^3-5(x-y)^3
=(x-y)^3(4+3-5)
=2 (x-y)^3
(4) 4(x-y)^3+3(x-y)^3-5(x-y)^3
=(x-y)^3(4+3-5)
=2 (x-y)^3
(和3有区别么?)
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
2010-12-11
展开全部
(1)2(x-y)^
(2)2(x-y)^
(3)2(x-y)^3
(4)2(x-y)^3
(2)2(x-y)^
(3)2(x-y)^3
(4)2(x-y)^3
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