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Question 88

Prove that (7n+3)2−(7n−3)2(7n + 3)^2 - (7n - 3)^2(7n+3)2−(7n−3)2 is always a multiple of 12, for all positive integer values of nnn.

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Markscheme

Proof Questions

  1. GCSE
  2. /Maths
  3. /Proof

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

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