Solve polynomial equations, find roots of polynomials

Find all complex zeros $x_i in C$ of a polynomial $a_n x^n + a_{n - 1} x^{n - 1} + ... + a_1 x + a_0$ (numerical approach)

Ajdust the degree with the plus and minus buttons.
For equations 0 = 0 no solution will be computed because any value for x_i is a solution.
Empty input fields and invalid inputs are treated as zero.
Multiple identical solutions indicate a higher multiplicity.

Polynomial zeros