roots of a quadratic equation
Quadratic equations can be represented by three numbers,
c, which are the coefficient of
x^2, the coefficient of
x, and the constant term. The roots of a quadratic equation are everywhere where it touches the x axis, meaning the equation is equal to zero.
You can use the quadratic formula which calculates the roots. In fact, that's your task: write a function that returns the roots of a quadratic equation using the quadratic formula. Here is more information about it.
Note: you don't have to return complex roots if the curve does not cross the x-axis.
Thanks to this site for the challenge idea where it is considered Medium level in Python.