Prove that the sum of the squares of two consecutive odd numbers, the smaller of which is 2k+12k + 12k+1, is always 2 more than a multiple of 8, expressing the multiple in terms of kkk, where k k\,k is an integer.
207 exam-style questions on Eduqas GCSE Maths Proof. Each one has a worked solution and a mark scheme showing where the marks go.