C++ - quadratic equation solver

#include <iostream>
#include <cmath>

using namespace std;

int main ()
{
    int a , b , c ;
    float x1,x2,x;
    cout << "\nPlease enter the coefficients, separated by spaces : ";
    cin >> a >> b >> c;
    cout << "\nYou enter a = " << a << ", b = " << b << " c = " << c << "." << endl;
 
 
x=(b*b)-(4*a*c);
if (a==0)
       
         cout << "\nERROR : Unable to compute the equation!!!" << endl;

else 
{
       x1=(-b+sqrt(x))/(2*a);
       x2=(-b-sqrt(x))/(2*a);
       cout << "\nThe equation is : " << a << "x^2+" << b << "x" << c << endl;
       cout<< "\nThe solution are : " << x1 <<" and " << x2 << endl;
}

system ("pause");
return 0;
}