(x^3-3x^2)+(27-9x) (因式分解)
问题描述:
(x^3-3x^2)+(27-9x) (因式分解)
答
原式=x^2(x-3)-9(x-3)=(x+3)(x-3)^2
答
(x^3-3x^2)+(27-9x)
=x^2(x-3)-9(x-3)
=(x^2-9)(x-3)
=(x-3)^2(x+3)