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x方-4x+4分之2x-6÷(x+3)×3-x分之(x+3)(x-2)
人气:285 ℃ 时间:2020-01-29 16:50:06
解答
原式=2(x-3)/(x-2)²*1/(x+3)*[-(x+3)(x-2)/(x-3)]
=-2(x-3)/(x-2)²*1/(x+3)*(x+3)(x-2)/(x-3)
=-2(x-3)/(x-2)²*(x-2)/(x-3)
=-2/(x-2)
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