C# Discriminant

public class Discriminant
{
    public static void Main(String[] args)
    {

        Console.Write("Введите значение a: ");
        double a = Convert.ToDouble(Console.ReadLine());
        Console.Write("Введите значение b: ");
        double b = Convert.ToDouble(Console.ReadLine());
        Console.Write("Введите значение c: ");
        double c = Convert.ToDouble(Console.ReadLine());

        if (a == 0 && b == 0 && c == 0 || a == 0 && b == 0 || b == 0 && c == 0 || a == 0 && c == 0)
        {
            Calc.error();
        }

        else if (a == 0)
        {
            Calc.noA(b, c);
        }
        else if (b == 0)
        {
            Calc.noB(a, c);
        }

        else if (c == 0)
        {
            Calc.noC(a, b);
        }

        else
        {
            Calc.all(a, b, c);
        }

    }
}

public class Calc
{
    public static void error()
    {
        Console.WriteLine("\nОшибка");
    }

    public static void noA(double b, double c)
    {

        double temp1 = c / b;
        double x = temp1 * -1;
        Console.WriteLine($"\nЗначение x = {x}");

    }

    public static void noB(double a, double c)
    {

        double temp1 = c * -1;
        double temp2 = temp1 / a;
        double temp3 = Math.Sqrt(temp2);
        double x1 = temp3;
        double x2 = temp3 * -1;

        Console.WriteLine($"\nЗначение x1 = {x1} x2 = {x2}");
    }

    public static void noC(double a, double b)
    {

        double x;

        x = b / a;
        x = x * -1;

        Console.WriteLine($"\nЗначение x = 0 или {x}");
    }

    public static void all(double a, double b, double c)
    {
        double temp1 = b * b;
        double temp2 = 4 * a * c;
        double temp3 = temp1 - temp2;
        Console.WriteLine($"\nДискриминант = {temp3}");
        if (temp3 < 0)
        {
            Console.WriteLine("Корней нет");
        }
        else
        {
            double temp4 = Math.Sqrt(temp3);
            temp1 = b * -1;
            temp2 = temp1;
            temp1 = temp1 - temp4;
            temp2 = temp2 + temp4;
            temp3 = a * 2;
            double x1 = temp1 / temp3;
            double x2 = temp2 / temp3;

            Console.WriteLine($"\nЗначение x1 = {x1} x2 = {x2}");
        }
    }

}