Step 1:

The sequence is $\"\"$

Rewrite the sequence as $\"\"$ .

The sequence is in the form of geometric sequence $\"\"$ .

Therefore, the sequence is geometric sequence.

The first term of the sequence is $\"\"$ .

The second term of the sequence $\"\"$ .

Common ratio $\"\"$ .

$\"\"$ .

Step 2:

Sum of the first $\"\"$ terms of the geometric series is $\"\"$ .

Where $\"\"$ is the first term and $\"\"$ is the common ratio.

Substitute the values of $\"\"$ and $\"\"$ in $\"\"$ .

$\"\"$

Solution:

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