计算:(2x^2-5x+7)/(x-1)
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计算:(2x^2-5x+7)/(x-1)
计算:(2x^2-5x+7)/(x-1)
计算:(2x^2-5x+7)/(x-1)
(2x^2-5x+7)/(x-1)
=(2x^2-2x-3x+3+4)/(x-1)
=2x-3+4/(x-1)
(2x^2-5x+7)÷(x-1)=2x-3.4
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