a Show that 2 x 1 2 x 1 15 can be written as 2(2 x ) (2 x ) 15 b Hence find the value of 2 x c Find the value of x ...

a To show that 2x1 2x1 15 can be written as 22x 2x 15 we can use the distributive ...

a. Show that 2 x+1 2 x-1 = 15 can be written as 2(2 x )

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a. Show that 2^x+1 – 2^x-1 = 15 can be written as 2(2^x) – ½(2^x) = 15.

b. Hence find the value of 2^x.

c. Find the value of x.

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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 01:47 AM

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a. Show that 2 x+1 2 x-1 = 15 can be written as 2(2 x )

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

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