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Proof

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Question 50

Prove that (2n+k)2−(2n−k)2(2n + k)^2 - (2n - k)^2(2n+k)2−(2n−k)2 is always a multiple of 8k8k8k, for all positive integer values of n n\,n and kkk.

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Markscheme

Proof Questions

  1. GCSE
  2. /Maths
  3. /Proof

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

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