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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a b 25 a 4d 33 a ...View the full answer
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Related Book For
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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