$\"\"$

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The given geometric series $\"\"$ .

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

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

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

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

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Evaluate powers: $\"\"$ .

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$\"\"$

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Subtract numerator: $\"\"$ .

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$\"\"$

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Divide: $\"\"$ .

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$\"\"$

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$\"\"$

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