## Deduce expressions to calculate the nth term of quadratic sequences.

##### Level 1Level 2Level 3Exam-StyleDescriptionHelpMore Sequences

This is level 1; Quadratic sequences of the form n2 + c. You can earn a trophy if you get at least 4 questions correct.

 Find the nth term of the sequence:4, 7, 12, 19, 28, 39, ... Working: Find the nth term of the sequence:8, 11, 16, 23, 32, 43, ... Working: Find the nth term of the sequence:13, 16, 21, 28, 37, 48, ... Working: Find the nth term of the sequence:-14, -11, -6, 1, 10, 21, ... Working: Find the nth term of the sequence:-10, -7, -2, 5, 14, 25, ... Working:
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This is Quadratic Sequences level 1. You can also try:
Level 2 Level 3

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## Description of Levels

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Level 1 - Quadratic sequences of the form n2 + c

Level 2 - Quadratic sequences of the form an2 + c

Level 3 - Quadratic sequences of the form an2 + bn + c

Exam Style questions are in the style of GCSE exam paper questions and worked solutions are available for Transum subscribers.

Handshakes - Try this lesson Starter which can generate a quadratic number sequence.

## Example

This video explains how to find the nth term of a quadratic sequence and is from Mr Hegarty.

A shorter, concise method is shown here.

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