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5m(x-y)的2次方+10n(y-x)的3次方 因式分解
人气:233 ℃ 时间:2019-10-23 11:14:57
解答
5m(x-y)²+10n(y-x)³
=5m(x-y)²-10n(x-y)³
=5(x-y)²[m-2n(x-y)]
=5(x-y)²(m-2nx+2ny)
=-5(x-y)²(2nx-2ny-m)
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