The polynomial has a degree 6 and real coefficients. The zeros of the polynomial given are -6+13i^3, -8+s^2*i and -3-4i
As the coefficients of the polynomial are real the complex roots occur in conjugate pairs. This gives the roots as -6-13i, -6+13i, -8+s^2*i, -8-s^2*i, -3-4i and -3+4i
From the given information it is not possible to determine the value of s as it can take on any value and the other conditions would remain the same.
The roots of the polynomial can only be given as -6-13i, -6+13i, -8+s^2*i, -8-s^2*i, -3-4i and -3+4i where s is a real number.