Use synthetic division to divide

Question

x⁴+x³-7x²-9x-18 by x=-3

Answer 1

-3 | 1 1 -7 -9 -18

-3 6 3 18

___________________________

1 -2 -1 -6 0

The quotient is x^3 - 2x^2 - x - 6

CHECK

(x+3)(x^3 - 2x^2 -x - 6) = x^4 - 2x^3 - x^2 - 6x

3x^3 - 6x^2 -3x - 18

= x^4 + x^3 -7x^2 - 9x - 18