Here are the first 5 terms of a quadratic sequence.
7 12 19 28 39
Show that the n n\,nth term is n2+2n+4n^2 + 2n + 4n2+2n+4
Hence, determine whether 147 is a term in the sequence.
Hence, find the term after 147 in the sequence.
201 exam-style questions on OCR GCSE Maths The Nth Term of a Quadratic Sequence. Each one has a worked solution and a mark scheme showing where the marks go.