GCSE Secondary Maths Age 13-17 - Algebra: Sequences - Explained

The video tutorial explains how to find the n-th term of a sequence using a quadratic expression. It begins by identifying the sequence and calculating the first and second differences. The tutorial then determines the quadratic term and combines it with other terms to form the final expression. The video concludes with exam tips and alternative methods for solving similar problems.

What pattern do you observe when comparing the 2n squared numbers to the original sequence?

What is the final expression for the n-th term of the sequence?

Discuss the alternative method mentioned for solving the sequence problem.