How to find the nth term of a quadratic sequence?

Find the difference between each term in the sequence. Then find the second difference, i.e. the difference between each of the primary differences. Divide this by 2, to give you the coefficient of n^2. Now rewrite your sequence and below each term, the respective 'coefficient n^2'. Subtract one from the other, which will leave you with a linear sequence. By GCSE level, student should know how to calculate the nth term of a linear sequence, but if not then will run through how to do this.

SK
Answered by Sawan K. Maths tutor

6270 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the inequality 5x + 3 ≤ 3x − 6


A is (2, 12) and B is (8, 2) Calculate the midpoint of AB.


Three whole numbers are each rounded to the nearest 10. The sum of the rounded numbers is 70. Work out the maximum possible sum for the original three numbers.


Tom bought a full bag of coal. After one week the bag was 2/3 full. During the next week he used 1/4 of the remaining coal. How much is left?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences