#include <cstdlib>
#include <iostream>
#include <cmath>

using namespace std;

int main(void)
{
    float a, b, c;   // coeficientes
    
    cout << "Dar los coeficientes\n";
    cin >> a;
    cin >> b;
    cin >> c;
    
    float r;
    r= b/(2*a);
    
    float d;
    d= r*r - c/a;
    cout << "discriminante: " << d << endl;
    if ( d >= 0 )
       {
        cout << "raices reales\n";
        cout << "x1= " << -r + sqrt(d) << endl;
        cout << "x2= " << -r - sqrt(d) << endl;
       }
    else
       {
        cout << "raices complejas\n";
        cout << "x1= " << -r << " + i" << sqrt(-d) << endl;
        cout << "x2= " << -r << " - i" << sqrt(-d) << endl;
       }
       
    system("PAUSE");
    return EXIT_SUCCESS;
}