Find the coefficient of x 3 in each of the following expansions. a. (1 x) 9

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Find the coefficient of x³ in each of the following expansions.
a. (1 − x)⁹

b. (1 + 3x)¹²

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Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

ISBN: 9781108407144

1st Edition

Authors: Sue Pemberton, Julian Gilbey

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Question Posted: Mar 10, 2023 06:35 AM

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Find the coefficient of x 3 in each of the following expansions. a. (1 x) 9

Question:

X 2+ 4 7

Step by Step Answer:

a 1 x9 Using the binomial theorem the expansion of 1 x9 is 1 x9 1 9x 3...View the full answer

Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

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