#include "stdafx.h"
#include <cmath>
#include <iostream>
using namespace std;
//alidoran
int main()
{ double a, b, c;
cout << "Enter the coefficients of a quadratic equation:"
<< endl;
cout << "\ta: ";
cin >> a;
cout << "\tb: ";
cin >> b;
cout << "\tc: ";
cin >> c;
cout << "The equation is: " << a << "*x*x + " << b << "*x + " << c << " = 0" << endl;
double d = b*b - 4 * a*c;
double sqrtd = sqrt(d);
double x1 = (-b + sqrtd) / (2 * a);
double x2 = (-b - sqrtd) / (2 * a);
cout << "The solutions are:" << endl;
cout << "\tx1 = " << x1 << endl;
cout << "\tx2 = " << x2 << endl;
cout << "check:" << endl;
cout << "\ta+x1*x1 + b*x1 + c = " << a*x1*x1 + b*x1 + c << endl;
cout << "\ta+x2*x2 + b*x2 + c = " << a*x2*x2 + b*x2 + c << endl;
system("pause");
return 0;
}
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