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化简:2x-6/4-4x+x²÷(x+3)·x(x+3)-2(3+x)/3-x
人气:245 ℃ 时间:2020-02-06 13:45:47
解答
(2x-6)/(4-4x+x^2)÷(x+3)*[x(x+3)-2(3+x)]/(3-x)
=[2(x-3)/(x-2)^2]*(x+3)(x-2)/[(3-x)(x+3)]
=-2/(x-2)
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