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把x3+x2y-xy2-y3分解因式,标准答案是()A.(x+y)(x2-y2)B.x2(x+y)-y2(x+y)C.(x+y)(x-y)2D.(x+y)2(x-y)
题目详情
把x3+x2y-xy2-y3分解因式,标准答案是( )
A. (x+y)(x2-y2)
B. x2(x+y)-y2(x+y)
C. (x+y)(x-y)2
D. (x+y)2(x-y)
▼优质解答
答案和解析
x3+x2y-xy2-y3
=x2(x+y)-y2(x+y)
=(x+y)(x2-y2)
=(x+y)2(x-y).
故选:D.
=x2(x+y)-y2(x+y)
=(x+y)(x2-y2)
=(x+y)2(x-y).
故选:D.
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