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

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- Aug 30th 2011, 02:42 PMPwnedkidExpand (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 :)

please help - Aug 30th 2011, 03:16 PMbjhopperRe: 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