Question

Please help! One root of x^3-3x^2-15x+9?

Answer 1

The possible rational roots are:
\[\pm1, \pm3, \pm9\]

Answer 2

Use synthetic division to see if any of those are actual roots.

Answer 3

So answer would be d.?

Answer 4

I don't know yet. Did you find a rational root? And if so, what was it?

Answer 5

3

Answer 6

Yep. I agree with your result. Good job.

Answer 7

Thank you for your help!