一次课堂练习,小敏同学做了如下4道因式分解题,你认为小敏做得不够完整的一题是[]A.x3-x=x(x2-1)B.x2-2xy+y2=(x-y)2C.x2y-xy2=xy(x-y)D.x2-y2=(x-
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题目简介
一次课堂练习,小敏同学做了如下4道因式分解题,你认为小敏做得不够完整的一题是[]A.x3-x=x(x2-1)B.x2-2xy+y2=(x-y)2C.x2y-xy2=xy(x-y)D.x2-y2=(x-
题目详情
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B.x2-2xy+y2=(x-y)2
C.x2y-xy2=xy(x-y)
D.x2-y2=(x-y)(x+y)
答案