Question

Chapter 5:Indices and Logarithms
Double checking

Answer 1

simplify the following

Answer 2

\[=2^n-2^{n+1}\]

Answer 3

\[=(2^n-2^n~\times2^{-1})\]

Answer 4

\[=2^n(1-1-1)\]

Answer 5

\[=-2^n\]

Answer 6

correct :)!

Answer 7

Thnx @butterflydreamer :)

Answer 8

well your answer is correct but i think .. the working out had an error? :O
Idk i solved it differently

Answer 9

can u show ur working