Question

Need help question 15

Answer 1

To divide by (x+1) in synthetic division, you divide by -1.

-1 1 -7 4 12

-1 8 -12

—————————-

1 -8 12 0

This gives us x^2 -8x +12x which factors to (x-2) (x-6). We still have the factor of (x+1) so the zeros will be 2, 6, and -1.

Explanation: