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化简[x-1-(8/x+1)]/(x+3)/(x+1)
人气:211 ℃ 时间:2020-04-15 12:49:27
解答
[x-1-(8/x+1)]/(x+3)/(x+1)
=[(x-3)(x+3)/(x+1)]/(x+3)/(x+1)
=x-3
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