问题补充:
单选题把-6(x-y)2-3y(y-x)2分解因式,结果是A.-3(x-y)2(2+y)B.-(x-y)2(6-3y)C.3(x-y)2(y+2)D.3(x-y)2(y-2)
答案:
A解析分析:首先把式子变形为-6(x-y)2-3y(x-y)2,再提取公因式-3(x-y)2即可.解答:-6(x-y)2-3y(y-x)2=-6(x-y)2-3y(x-y)2=-3(x-y)2(2+y).故选:A.点评:此题主要考查了提公因式法分解因式,关键是正确找到公因式.
时间:2021-06-12 04:31:51
单选题把-6(x-y)2-3y(y-x)2分解因式,结果是A.-3(x-y)2(2+y)B.-(x-y)2(6-3y)C.3(x-y)2(y+2)D.3(x-y)2(y-2)
A解析分析:首先把式子变形为-6(x-y)2-3y(x-y)2,再提取公因式-3(x-y)2即可.解答:-6(x-y)2-3y(y-x)2=-6(x-y)2-3y(x-y)2=-3(x-y)2(2+y).故选:A.点评:此题主要考查了提公因式法分解因式,关键是正确找到公因式.
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