gistfile1.cpp

#include <iostream>
#include <iomanip>
#include <math.h>
using namespace std;

int main()
{
    float A , B , C ;
    double delt , root , R1 , R2;
    cin >> A >> B >> C;
    delt = pow(B,2) - 4*A*C;
    if (root = 0 || delt < 0 )
    {
        cout << "Impossivel calcular" << endl;
    }
    else
    {
        R1 = -B + sqrt(delt)/2*A;
        R2 = -B - sqrt(delt)/2*A;
        cout << fixed << setprecision(5) << "R1 = " << R1 << "\nR2 = " << R2 << endl;
    }
    return 0;
}