Answer: 
<u>Step-by-step explanation:</u>
I am going to use Synthetic Division.
The divisor is: x + 2 = 0 → x = -2
The coefficients are: 1x³ + 0x² + 0x - 6 → 1, 0, 0, -6
-2 | 1 0 0 -6
<u>| ↓ -2 4 -8 </u>
1 -2 4 -14 ← remainder
Reduced Polynomial is: x² -2x + 4 - 14/(x + 2)