Program
#include<iostream.h>
#include<conio.h>
#include<math.h>
void main()
{
clrscr(); //to clear the screen
long i,n,x,sum=1;
cout<<“1+x+x^2+……+x^n”;
cout<<“nnEnter the value of x and n:”;
cin>>x>>n;
for(i=1;i<=n;++i)
sum+=pow(x,i);
cout<<“nSum=”<<sum;
getch(); //to stop the screen
}Output
