2x^2+6x-20/-x^2+5x-6分式化简
1个回答
=2(x^2+3x-10) / -(x^2-5x+6)
=2(x-2)×(x+5) / -(x-2)×(x-3)
=2(x+5) / -(x-3)
=2(x+5) / (3-x)
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