Substitution
55
Medium
0/2

a=2a = 2a=2 b=−6b = -6b=−6 c=−3c = -3c=−3

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

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Substitution Questions

Practise Edexcel GCSE Maths Substitution with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Substitution Questions

  1. GCSE
  2. /Maths
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