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Substitution

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Question 20
58%

k=x2−y22z\displaystyle k = \frac{x^2 - y^2}{2z}k=2zx2−y2​

x=12x = 12x=12 y=8y = 8y=8 z=4z = 4z=4

Work out the value of kkk.

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Substitution Questions

  1. GCSE
  2. /Maths
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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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