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Llana [10]
3 years ago
15

What is the sum of the seven terms of the geometric series 2- 8+32-...?

Mathematics
1 answer:
egoroff_w [7]3 years ago
6 0
The first term is 2 and the common ratio = -8/2 = -4

S7   = 2 * (-4)^7 - 1
                -------------    =      6554   answer
                  -4-1
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