X root Operator help

[lucidparadox]

I'm currently new to Python and I haven't been able to find the
operator/math function to find the square root or even the x root of a
number.  I'm rewriting a program that I wrote in BASIC that does the
math of a quadratic equation (user puts in a, b, and c values) and
tells the user whether it has 1 root, 2 roots, or no real roots and
displays the roots if it has real roots.

Thanks in advance,
Dan