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数学
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mn(m-n)-m(n-m)²
2m(m-n)(2n-m)求过程
人气:370 ℃ 时间:2020-04-11 10:44:03
解答
解
mn(m-n)-m(n-m)²
=mn(m-n)-m(m-n)²
=m(m-n)[n-(m-n)]
=m(m-n)(2n-m)���������ôд
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