Finding the remaining zeros of each polynomial function

Use the given zero to find the remaining zero's of each polynomial function.

P(x)= x^3+3x^2+x+3; -i

I'm pretty lost with this stuff. I've been watching Patrick's videos trying to remember my high school days but wow it's been a while hehe.

It looks like Conjugate Pair Theorem would be the way to solve. If I figure it out I'll post my solution.

If you guys could give me some direction to help me get back into the game that would be AWESOME!!

Thanks a TON