Edexcel P1 2020 January — Question 2

Exam BoardEdexcel
ModuleP1 (Pure Mathematics 1)
Year2020
SessionJanuary
TopicIndices and Surds
2. Given \(y = 3 ^ { x }\), express each of the following in terms of \(y\). Write each expression in its simplest form.
  1. \(3 ^ { 3 x }\)
  2. \(\frac { 1 } { 3 ^ { x - 2 } }\)
  3. \(\frac { 81 } { 9 ^ { 2 - 3 x } }\)
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