How would this be solved?

2. [-/1 Points] DETAILS SPRECALC6 3.6.034. 0/5 Submissions Used MY NOTES ASK YOUR TEACHER Factor the polynomial completely. P(x) = x6 + 16x3 + 64 P(X ) = Find all its zeros. State the multiplicity of each zero. (If an answer does not exist, enter DNE.) real zero X = with multiplicity complex zero x = (positive imaginary part) with multiplicity complex zero X = (negative imaginary part) with multiplicity