# Finding complex roots of integer polynomials

How would one find approximates for complex root of polynomial with integer coefficients,I know for example the Newton's method $$x_n=x_{n-1}-\frac{f(x_{n-1})}{f'(x_{n-1})}$$ Anyway is it possible to do such when you're finding complex roots(for example $3z^3+z^2+z+1$)?Or are there any other methods for doing such?

• Use a complex initial guess. – UserX Aug 21 '14 at 21:01