$\"\"$

The infinite geometric series is $\"\"$ .

Here $\"\"$ .

Find the common ratio.

$\"\"$ .

The common ratio $\"\"$ is $\"\"$ , therefore this infinite geometric series has a sum.

Formula for the infinite geometric series sum : $\"\"$ .

Substitute $\"\"$ and $\"\"$ in summation formula.

$\"\"$

$\"\"$ .

The sum of the series is $\"\"$ .

$\"\"$

The sum of the series is $\"\"$ .