static void Main(string[] args)
{
Console.WriteLine("ax^2 + bx + c = 0");
Console.Write("Enter a: ");
var aString = Console.ReadLine();
double a = InputValidation.CheckValidity(aString);
Console.Write("Enter b: ");
var bString = Console.ReadLine();
double b = InputValidation.CheckValidity(bString);
Console.Write("Enter c: ");
var cString = Console.ReadLine();
double c = InputValidation.CheckValidity(cString);
var discriminant = SquareEquationMath.Discriminant(a, b, c);
Console.WriteLine($"Discriminant = {discriminant}");
if (discriminant == 0)
{
var firstRoot = SquareEquationMath.FirstRoot(discriminant, a, b);
Console.WriteLine("Equation has 1 root");
Console.WriteLine($"x1 = {firstRoot:F2}");
Console.WriteLine($"{a}x^2 + {b}x + {c} = {a}*(x - {firstRoot:F2})*(x - {firstRoot:F2})");
}
if (discriminant > 0)
{
var firstRoot = SquareEquationMath.FirstRoot(discriminant, a, b);
var secondRoot = SquareEquationMath.SecondRoot(discriminant, a, b);
Console.WriteLine("Equation has 2 roots");
Console.WriteLine($"x1 = {firstRoot:F2}");
Console.WriteLine($"x2 = {secondRoot:F2}");
Console.WriteLine($"{a}x^2 + {b}x + {c} = {a}*(x - {firstRoot:F2})*(x - {secondRoot:F2})");
}
if (discriminant < 0)
{
Console.WriteLine("Equation has no roots");
}
Console.ReadKey();
}