Compute the real and complex roots of a cubic in the form $ax³+bx²+cx+d$.

Input parameters:

1. A → Factor for cubic portion of the polynomial.
2. B → Factor for quadratic portion of the polynomial.
3. C → Factor for linear portion of the polynomial.
4. D → Factor for constant portion of the polynomial.

Output parameters:

1. Re → All the real roots of the cubic.
2. Cx → All the complex roots of the cubic.