Roots of quadratic equation: https://www.geeksforgeeks.org/program-to-find-the-roots-of-quadratic-equation/
Sum of all natural numbers from 1 to n is s = (n * (n + 1)) / 2
Roots of quadratic equation: https://www.geeksforgeeks.org/program-to-find-the-roots-of-quadratic-equation/
Sum of all natural numbers from 1 to n is s = (n * (n + 1)) / 2