// Solving ax^2 + bx + c = 0 for a=1, b=3, c=-4
#include <iostream>
#include <math.h>
using namespace std;

double a, b, c; 
double D, x1, x2;

int main()
{
  a = 1.;
  b = 3.;
  c = -4.;
  D = b*b-4.*a*c; // determinant

  x1 = (-b + sqrt(D))/(2.*a); // 1st root
  x2 = (-b - sqrt(D))/(2.*a); // 2nd root

  cout << x1 << " " << x2 << endl; 
  // " " encloses a string of character(s)
}