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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a Using the binomial theorem we have 1 y4 1 4y 6y2 4y3 y4 The first three terms in as...View the full answer
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Related Book For
Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook
ISBN: 9781108407144
1st Edition
Authors: Sue Pemberton, Julian Gilbey
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