a Find the first three terms, in ascending powers of y, in the expansion of (1 y) 4 b By replacing y with 5x 2x 2 , find the coefficient of x 2 in the expansion of (1 5x 2x 2 ) 4 ...

a Using the binomial theorem we have 1 y4 1 4y 6y2 4y3 y4 The first three terms in as ...

a. Find the first three terms, in ascending powers of y, in the expansion of (1 +

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a. Find the first three terms, in ascending powers of y, in the expansion of (1 + y)⁴.
b. By replacing y with 5x − 2x², find the coefficient of x² in the expansion of (1 + 5x − 2x²)⁴.

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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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a. Find the first three terms, in ascending powers of y, in the expansion of (1 +

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Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

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