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5(x-y)3+10(y-x)2.(提公因式法)
人气:135 ℃ 时间:2020-04-15 12:28:45
解答
5(x-y)3+10(y-x)2
=5(x-y)3+10(x-y)2
=5(x-y)2[(x-y)+2]
=5(x-y)2(x-y+2).
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