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(); }