$\"\"$

\

The sum of a geometric series is $\"\"$ .

\

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

\

The geometric series is $\"\"$ to 6 terms

\

$\"\"$ .

\

$\"\"$ (Substitute $\"\"$ ) $\"\"$

\

$\"\"$ (Subtract denominator: $\"\"$ )

\

$\"\"$ (Evaluate power: $\"\"$ )

\

$\"\"$ (Subtract numerator: $\"\"$ )

\

Divide: $\"\"$ .

\

$\"\"$ $\"\"$

\

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