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x-1分之x2+1-x分之x化简
人气:131 ℃ 时间:2020-06-11 21:55:11
解答
x-1分之x2+1-x分之x
=x^2/(x-1)-x/(x-1)
=(x^2-x)/(x-1)
=x(x-1)/(x-1)
=x
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