## Exam-Style Question on Quadratic Sequence## A mathematics exam-style question with a worked solution that can be revealed gradually |

Question id: 543. This question is similar to one that appeared on a GCSE Higher paper in 2019. The use of a calculator is allowed.

Here are the first six terms of a quadratic sequence.

$$-1, 8, 21, 38, 59, 84$$Find an expression, in terms of \(n\), for the \(n\)th term of this sequence.

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If you need more practice try the interactive exercise Quadratic Sequences.

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