Implement the function find_roots to find the roots of the quadratic equation: ax2 + bx + c = 0.
The roots of the quadratic equation can be found with the following formula:
For example, the roots of the equation 2x2 + 10x + 8 = 0 are -1 and -4.
- Sample case: Wrong answer
- Integer roots: Wrong answer
- Real roots: Wrong answer