Question

divide -2x^3 -4x^2 + 3x +2 by x=-3

Answer 1

Do you mean substitute x=-3 into the expression?
You cannot divide by x=-3

Answer 2

yes substitute

Answer 3

So you just need to replace all of the xes with -3:

= -2x^3 -4x^2 + 3x +2
= -2*(-3^3) - 4*(-3^2) + 3*-3 + 2
= -2*-27 - 4*9 - 9 + 2 (do the indices)
= 54 - 36 - 9 + 2 (last multiplication)
= 11