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Algebraic Expressions

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Question 149

Given that x=2x = 2x=2 is a solution of

22x+1−k(2x)−12=0 2^{2x+1} - k(2^x) - 12 = 0 22x+1−k(2x)−12=0

find the value of kkk.

[3]
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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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