The binomial expansion of (1 + 9x) 2/3 in ascending powers of x up to and including

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The binomial expansion of (1 + 9x)2/3 in ascending powers of x up to and including the term in

a. Find the value of c and the value of d.

b. Use this expansion with your values of c and d together with an appropriate value of x to obtain an estimate of (1.45)2/3.

c. Obtain (1.45)2/3 from your calculator and hence make a comment on the accuracy of the estimate you obtained in part b.

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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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