# Math Help - Expand (x+3) (x-4) (2x+1)

1. ## Expand (x+3) (x-4) (2x+1)

expand fully and simplify

expand and simplify each of this
(x+3) (x-4) (2x+1)

answer as the back of my book is :2xcubed -xsquared -25x - 12

how do you get that

2. ## Re: help me with this

Hi Pwnedkid,
Multiply the first two terms which gives x^2-x-12 then multiply this times 2x+1 You will get the right answer after simplification