The n n\,nth term of a sequence is
2n2+4n−1 2n^2 + 4n - 1 2n2+4n−1Work out the k k\,kth term of the sequence.
201 exam-style questions on Eduqas GCSE Maths The Nth Term of a Quadratic Sequence. Each one has a worked solution and a mark scheme showing where the marks go.