Arturo O. answered 04/02/20
Experienced Physics Teacher for Physics Tutoring
The complex conjugate of each complex zero will also be a zero, so you will have 4 zeros:
2
-3
-3i
3i
With a leading coefficient of 1, the polynomial is
p(x) = (x - 2)(x + 3)(x + 3i)(x - 3i) = (x - 2)(x + 3)(x2 + 9)
You can expand this to standard form if you wish.