#include <iostream>
using namespace std;
int main()
{
float x,y,a,b;
cin>>x>>y>>a>>b;
cout<<x+2.0*y+6.0/5.0<<endl;
cout<<((2.0*a*b)/x)+y-(5.0*x)+7.0<<endl;
cout<<x-y+(3.0*x*y)/2.0+x/(4.0*y)<<endl;
cout<<((2.0*a*b)/x)*((2.0*a*b)/x);
return 0;
}
Se pune .0 ca sa afiseze numerele cu virgula
