How to get the roots of a polynomial function

- How to find the roots of a polynomial function
- How to find the roots of polynomial functions
- How to determine the roots of a polynomial function
- How to find all the roots of a polynomial function
- How to find the real roots of a polynomial function
- How to find the imaginary roots of a polynomial function
- How to find the complex roots of a polynomial function
- How to find rational roots of a polynomial function