Question

1. Is x + 8 a factor of b(x) = x3 + 18x2 + 80x? Determine using synthetic

division. Explain how you know it is or isn't.

Answer 1

If x+8 is a factor, divide by -8.

-8 1 18 80

-8 -80

_______________

1 10 0

It is a factor because there is no remainder.

Explanation: