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Proof

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Question 13

Prove that (5k+2)2−(5k−2)2(5k + 2)^2 - (5k - 2)^2(5k+2)2−(5k−2)2 is always a multiple of 40, for all positive integer values of kkk.

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Proof Questions

  1. GCSE
  2. /Maths
  3. /Proof

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

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