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6X^2-11XY-10Y^2因式分解
6x^2+7x-20交叉相乘
人气:199 ℃ 时间:2020-07-19 16:25:01
解答
6X^2-11XY-10Y^2
=(2x-5y)(3x+2y)
6x^2+7x-20
=(3x-4)(2x+5)
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