Here are the first 5 terms of a quadratic sequence.
6 11 18 27 38
Show that the n n\,nth term is n2+2n+3n^2 + 2n + 3n2+2n+3
Hence, determine whether 123 is a term in the sequence.
Practise AQA GCSE Maths The Nth Term of a Quadratic Sequence with exam-style questions for Foundation and Higher tier. 48 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.