下列多项式相乘，不能用平方差公式计算的是_刷题宝

题干

下列多项式相乘，不能用平方差公式计算的是（　　）

A：（x﹣2y）（2y+x）

B：（﹣2y﹣x）（x+2y）

C：（x﹣2y）（﹣x﹣2y）

D：（2y﹣x）（﹣x﹣2y）

上一题下一题 0.0难度选择题更新时间:2012-06-14 08:12:58

答案(点此获取答案解析）

B

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