把多项式x^2· (y-1)+x(1-y)分解因式等于
问题描述:
把多项式x^2· (y-1)+x(1-y)分解因式等于
答
x^2· (y-1)+x(1-y)
=x^2· (y-1)-x(y-1)
=x(y-1)(x-1)