(11x^3-2x^2)+2(x^3-x^2)
问题描述:
(11x^3-2x^2)+2(x^3-x^2)
答
13x^3-4x^2
答
(11x^3-2x^2)+2(x^3-x^2)
=11x^3-2x^2+2x^3-2x^2
=13x^3-4x^2
=x^2(13x-4)