把多项式x^5-(-4x^4y+5xy^4)-6x(-x^2y+xy^2)+(-3y^5)去括号后按字母x的降幂排列为___________
问题描述:
把多项式x^5-(-4x^4y+5xy^4)-6x(-x^2y+xy^2)+(-3y^5)去括号后按字母x的降幂排列为___________
答
原式=x^5+4x^4y-5xy^4+6x^3y-6x^2y^2-3y^5
=x^5+4x^4y+6x^3y-6x^2y^2-5xy^4-3y^5