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数学
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4x(x-y)²-12(y-x)³
人气:173 ℃ 时间:2020-06-12 06:13:14
解答
4x(x-y)²-12(y-x)³
=4x(x-y)²+12(x-y)³
=(x-y)²(4x+12x-12y)
=(x-y)²(16x-12y)
=4(x-y)²(4x-3y)
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