Question

i need to find the solutions to this equation? im so confused.
x^3+2x^2-24x-144=0
i graphed the function and got 1 of the zeros at -80

Answer 1

please help

Answer 2

do u want to solve it by factoring?

Answer 3

Oh...she is offline

Answer 4

lool

Answer 5

looks factoring is tough

Answer 6

(x-6) is one factor. Then use quadratic formula to solve the other two roots. There is no root at -80.

Answer 7

first factor 2x^2-24x-124

Answer 8

use this
\[x^3+2x^2-24x-144=x^3-216+2(x^2-12x+36)\]

Answer 9

divide whole equation by x..

Answer 10

i know all the factors i need to know the zeros. wen i graph it it untersects y at -80