问题标题:
3m(x-y)+6n(y-x)的公因式
问题描述:
3m(x-y)+6n(y-x)的公因式
梁剑雄回答:
3m(x-y)+6n(y-x)
=3m(x-y)-6n(x-y)
=3(x-y)(m-2n)
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3m(x-y)+6n(y-x)的公因式