The fifth term of an arithmetic series is 33. The tenth term is 68. The sum of

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The fifth term of an arithmetic series is 33. The tenth term is 68. The sum of the first n terms is 2225.

a. Show that 7n² + 3n − 4450 = 0.

b. Hence find the value of n.

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

ISBN: 9781292183404

1st Edition

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

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The fifth term of an arithmetic series is 33. The tenth term is 68. The sum of

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a b 25 a 4d 33 a ...View the full answer

Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

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