Quadratic and Cubic SequencesDeduce expressions to calculate the nth term of quadratic and cubic sequences. 
This is level 3; Quadratic sequences of the form an^{2} + bn + c. You can earn a trophy if you get at least 5 questions correct.
InstructionsTry 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. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 



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Level 1  Quadratic sequences of the form n^{2} + c
Level 2  Quadratic sequences of the form an^{2} + c
Level 3  Quadratic sequences of the form an^{2} + bn + c
Level 4  Cubic sequences of the form an^{3} + bn^{2} + cn + d
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.
More on this topic including lesson Starters, visual aids, investigations and selfmarking exercises.
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.
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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