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分式的计算 (x²/x-1)-x-1
人气:142 ℃ 时间:2020-01-05 16:31:03
解答
(x²/x-1)-x-1
=(x²/x-1)-(x+1)
=(x²-(x-1)(x+1))/(x-1)
=(x²-x²+1)/(x-1)
=1/(x-1)
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