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What is the sum of the first eight terms of the geometric series? –4 + 20 - 100 + 500 +... HELP PLSS​
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What is the sum of the first eight terms of the geometric series?

–4 + 20 - 100 + 500 +...

HELP PLSS​

User Vinay S Shenoy
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1 Answer

2 votes
-4 + 20- 100 + 500 - 2500 + 12,500 - 62,500 + 312,500 = 260,416
User Ehutchllew
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