题目内容
分解因式：x3+2x2y+2xy2+y3=______．
x3+2x2y+2xy3+y3=(x3+y3)+(2x2y+2xy2)
=(x+y)(x2-xy+y2)+2xy(x+y)
=(x+y)(x2+xy+y2)
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题目内容
分解因式：x3+2x2y+2xy2+y3=______．
x3+2x2y+2xy3+y3=(x3+y3)+(2x2y+2xy2)
=(x+y)(x2-xy+y2)+2xy(x+y)
=(x+y)(x2+xy+y2)