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数学
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(x+3)(x-2)-2(x2-3x)因式分解,
人气:493 ℃ 时间:2020-02-06 08:22:12
解答
(x+3)(x-2)-2(x2-3x)
=x2+x-6-2x2+6x
=-x2+7x-6
=-(x2-7x+6)
=-(x-6)(x-1)
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