i'm not sure which forum this belongs in, but this seemed like the closest fit. the question is asking me to solve for x and i'm kinda stuck :)

heres what i have:

$\displaystyle 2x^3+6x^2-x=3$

so i brought the 3 over and found out -3 is a factor

$\displaystyle f(-3)=2(-3^3)+6(-3^2)-(-3)-3$

$\displaystyle -54+54+3-3=0$

but then when i divide the initial equation by x+3 it end up with a zero and then i dont really know where to go from there

ideas?