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
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
please help