Răspuns:
#include <iostream>
#include <cmath>
using namespace std;
int main() {
float a, b, c, x1, x2, delta, parteaReala, parteaImaginara;
cin >> a >> b >> c;
delta = b*b - 4*a*c;
if (delta > 0) {
x1 = (-b + sqrt(delta)) / (2*a);
x2 = (-b - sqrt(delta)) / (2*a);
cout << "x1 = " << x1 << endl;
cout << "x2 = " << x2 << endl;
}
else if (delta == 0) {
x1 = (-b + sqrt(delta)) / (2*a);
cout << "x1 = x2 = " << x1 << endl;
}
else {
parteaReala = -b/(2*a);
parteaImaginara =sqrt(-delta)/(2*a);
cout << "x1 = " << parteaReala << "+" << parteaImaginara << "i" << endl;
cout << "x2 = " << parteaReala << "-" << parteaImaginara << "i" << endl;
}
return 0;
}
Explicație:
