QuadraticEq

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


class QuadraticEq
{
    static void Main()
    {
        double a = double.Parse(Console.ReadLine());
        double b = double.Parse(Console.ReadLine());
        double c = double.Parse(Console.ReadLine());
        double determinant = Math.Pow(b, 2) - (4 * a * c);
        if (determinant == 0)
        {
            Console.WriteLine("There is one real root x1=x2= "+ (-b/(2*a)));
        }
        else if ( determinant > 0)
        {
            double firstRoot = (-b - Math.Sqrt(determinant)) / (2 * a);
            double secondRoot = (-b + Math.Sqrt(determinant)) / (2 * a);
            Console.WriteLine("There is two real roots x1 = " + firstRoot + ", x2 = " + secondRoot );
        }
        else
        {
            Console.WriteLine("There is no real roots.");
        }

    }
}