(x+y)²-2(x-y) 因式分解
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解决时间 2021-02-27 06:30
- 提问者网友:绫月
- 2021-02-26 21:52
(x+y)²-2(x-y) 因式分解
最佳答案
- 五星知识达人网友:骨子里都是戏
- 2021-02-26 22:33
(x+y)^2-2(x-y)
=x^2+2xy+y^2-2(x-y)
=x^2-2xy+y^2-2(x-y)+4xy
=(x-y)^2-2(x-y)+4xy
=(x-y)(x-y-2)+4xy
=x^2+2xy+y^2-2(x-y)
=x^2-2xy+y^2-2(x-y)+4xy
=(x-y)^2-2(x-y)+4xy
=(x-y)(x-y-2)+4xy
全部回答
- 1楼网友:等灯
- 2021-02-26 23:07
(x-y)²-(x+y)(x-y) =(x-y)(x-y-x-y) =-2y(x-y) 已检查,满意请及时采纳,不懂请追问!
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