Edexcel C2 — Question 6

Exam BoardEdexcel
ModuleC2 (Core Mathematics 2)
TopicExponential Equations & Modelling
  1. (a) Given that \(y = 3 ^ { x }\), find expressions in terms of \(y\) for
    1. \(3 ^ { x + 1 }\),
    2. \(3 ^ { 2 x - 1 }\).
      (b) Hence, or otherwise, solve the equation
    $$3 ^ { x + 1 } - 3 ^ { 2 x - 1 } = 6$$ giving non-exact answers to 2 decimal places.
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