# Quadratic Sequences

## 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:9, 12, 17, 24, 33, 44, ... Working: Find the nth term of the sequence:12, 15, 20, 27, 36, 47, ... Working: Find the nth term of the sequence:-14, -11, -6, 1, 10, 21, ... Working: Find the nth term of the sequence:-9, -6, -1, 6, 15, 26, ... Working:
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This is Quadratic Sequences level 1. You can also try:
Level 2 Level 3

## Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

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## Go Maths

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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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