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Substitution

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Question 21

a=3a = 3a=3 b=−4b = -4b=−4 c=5c = 5c=5

Work out the value of b2−4acb^2 - 4acb2−4ac

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Markscheme

Substitution Questions

  1. GCSE
  2. /Maths
  3. /Substitution

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

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