find all of the zeros of p(x)= x^3+2x^2-16, given that -2-2i is a zero.(if there is more than one zero, separate them with commas.)

find all of the zeros of p(x)= x^3+2x^2-16, given that -2-2i is a zero.
we have that
If (2-2i) is a zero
that means
(2+2i) is a zero too by the Conjugate Zeros Theorem
using a graphing tool
the third zeros of the function is a real number
x=2
therefore