//我是个傻逼 #include <iostream> //我是个傻逼 #include <math.h> using namespace std; int main (){ double a,b,c,x,y; cin>>a>>b>>c; x=-b/(a*2); y=((4*a*c)-b*b)/(4*a); cout<<"("<<x<<","<<y<<")"; system("pause"); return 0; }