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Algebraic Expressions

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Question 3
87%

Given y=3xy = 3^xy=3x

a.

Express 9x 9^x\,9x in terms of yyy.

[2]
b.

Hence, or otherwise, solve 9x−7(3x)−18=09^x - 7(3^x) - 18 = 09x−7(3x)−18=0

[3]
Markscheme

Algebraic Expressions Questions

  1. A Level
  2. /Maths
  3. /Algebraic Expressions

233 exam-style questions on Edexcel A Level Maths Algebraic Expressions, covering 1.1 Index Laws, 1.2 Expanding Brackets, 1.3 Factorising, 1.4 Negative and Fractional Indices, and 1.5 Surds. Each one has a worked solution and a mark scheme showing where the marks go.

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