The first three terms of a geometric series are p(3q + 1), p(2q + 2) and p(2q

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The first three terms of a geometric series are p(3q + 1), p(2q + 2) and p(2q − 1), where p and q are non-zero constants.

a. Show that one possible value of q is 5 and find the other possible value.

b. Given that q = 5, and the sum to infinity of the series is 896, find the sum of the first 12 terms of the series. Give your answer to 2 decimal places.

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

ISBN: 9781292183404

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Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran

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The first three terms of a geometric series are p(3q + 1), p(2q + 2) and p(2q

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

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