\"\"

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The given values \"\".

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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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\"\"            (Product of two same signs is positive)\"\"

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\"\"            (Add denominator: \"\")

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\"\"             (Evaluate powers: \"\")

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\"\"                   (Add numerator: \"\")

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\"\"                                (Multiply: \"\")

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\"\"                                   (Divide: \"\")\"\"

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The value of \"\".