Using the substitution u = 5 x , or otherwise, solve 5 2x+1 = 7 (5 x

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Using the substitution u = 5^x, or otherwise, solve

5^2x+1 = 7 (5^x) – 2.

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

ISBN: 9781108411660

2nd Edition

Authors: Sue Pemberton

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Question Posted: Aug 25, 2021 01:41 AM

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Using the substitution u = 5 x , or otherwise, solve 5 2x+1 = 7 (5 x

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We can start by substituting u 5x into the equation 52x1 7 5x 2 This gives us u...View the full answer

Cambridge IGCSE And O Level Additional Mathematics Coursebook

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