题目描述

看好给出的式子，去应用它。

样例

#include<iostream>
#include<iomanip>
#include<cmath>
using namespace std;
int main()
{
    double a,b,c,m;
    cin>>a>>b>>c;
    m=sqrt(b*b-4*a*c);
    if((b*b-4*a*c)<0||a==0)
    cout<<"Impossivel calcular"<<endl;
    else
    cout<<fixed<<setprecision(5)<<"R1 = "<<(-b+m)/(2*a)<<endl;
    cout<<fixed<<setprecision(5)<<"R2 = "<<(-b-m)/(2*a)<<endl;
    return 0;
}