分类：教育/科学-学习帮助
问题：x(x+y)(x
怎样分解因式
回答：x(x+y)(x-y)-x(x+y)^2
=x(x+y)(x-y)-x(x+y)(x+y)
=x(x+y)(x-y-x-y)
=-2xy(x+y)