化简:x2/x-1减去1/x-1
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解决时间 2021-03-20 19:18
- 提问者网友:最美的风景
- 2021-03-20 14:22
化简:x2/x-1减去1/x-1
最佳答案
- 五星知识达人网友:深街酒徒
- 2021-03-20 15:06
x2/x-1减去1/x-1
=(x^2-1)/(x-1)
=(x+1)(x-1)/(x-1)
=x+1
=(x^2-1)/(x-1)
=(x+1)(x-1)/(x-1)
=x+1
全部回答
- 1楼网友:过活
- 2021-03-20 16:59
(x-1)[1-(x 1)/(x-1/x)] =(x-1){1-(x 1)/[(x^2-1)/x]} =(x-1){1-(x 1)*x/[(x 1)(x-1)]} =(x-1)[1-x/(x-1)] =(x-1)(x-1-x)/(x-1) = - 1
- 2楼网友:逃夭
- 2021-03-20 16:28
原式=x^2/(x-1)-1/(x-1)=(x^2-1)/(x-1)=(x+1)(x-1)/(x-1)=x+1
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