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Substitution

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Question 77

A=5p+6qA = 5p + 6qA=5p+6q

p=10p = 10p=10 q=−2q = -2q=−2

Work out the value of AAA.

Hence show that A2−4A=1292A^2 - 4A = 1292A2−4A=1292.

[3]
Markscheme

Substitution Questions

  1. GCSE
  2. /Maths
  3. /Substitution

296 exam-style questions on AQA GCSE Maths Substitution. Each one has a worked solution and a mark scheme showing where the marks go.

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