因式分解:x2y2-4xy-x2-y2+1
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解决时间 2021-10-16 02:59
- 提问者网友:藍了天白赴美
- 2021-10-15 18:25
因式分解:x2y2-4xy-x2-y2+1.
最佳答案
- 五星知识达人网友:醉吻情书
- 2020-02-23 00:23
x2y2-4xy-x2-y2+1
=x2y2-2xy+1-x2-y2-2xy
=(xy-1)2-(x+y)2
=(xy-1+x+y)(xy-1-x-y).
=x2y2-2xy+1-x2-y2-2xy
=(xy-1)2-(x+y)2
=(xy-1+x+y)(xy-1-x-y).
全部回答
- 1楼网友:行路难
- 2021-07-15 17:12
=(xy)2-2xy+1-(x2+2xy+y2)
=(xy-1)2-(x+y)2
=(xy-1+x+y)(xy-1-x-y)
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