(3x+2)(2x+1)(x-1)等于多少过程

问题描述:

(3x+2)(2x+1)(x-1)等于多少过程

 (3x+2)(2x+1)(x-1)
=(6x²+3x+4x+2)(x-1)
=(6x²+7x+2)(x-1)
=6x³+7x²+2x-6x²-7x-2
=6x³+x²-5x-2