Solve, giving your answers correct to 3 sf. a. 2 2x + 2 x+1 15 =

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Solve, giving your answers correct to 3 sf.

a. 2^2x + 2^x+1 – 15 = 0

b. 6^2x – 6^x+1 + 7 = 0

c. 3^2x – 2(3^x+1) + 8 = 0

d. 4^2x+1 = 17 (4^x) - 15

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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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Solve, giving your answers correct to 3 sf. a. 2 2x + 2 x+1 15 =

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a 22x 2x1 15 0 Combining like terms we get 24x 2x1 15 2x2 24x 1 15 2x2 24x 14 0 factoring ...View the full answer

Cambridge IGCSE And O Level Additional Mathematics Coursebook

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