问题描述: 因式分解:x^3(a+1)-xy(x-y)(a-b)+y^3(b+1)急.................急,,,急 1个回答 分类:数学 2014-11-28 问题解答: 我来补答 x^3(a+1)-xy(x-y)(a-b)+y^3(b+1)=ax^3+x^3-ayx^2+byx^2+axy^2-bxy^2+by^3+y^3=ax(x^2-xy+y^2)+by(x^2-xy+y^2)+(x+y)(x^2-xy+y^2)=〔(a+1)x+(b+1)y〕(x^2-xy+y^2) 展开全文阅读