Finding the nth term of a quadratic sequence | Higher GCSE | JaggersMaths

How to find the nth term of a quadratic sequence

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[harrysmithson]

Please continue to make videos on maths. I have my mock exams coming up in two weeks and my exams next year and this 9 minute video has taught me more than my teacher does in 1 hour.

[ButtChinsAreHereToStay]

7:48 Don't know if this helps others but the penny didn't drop for me straight away. When the number is a constant (ie doesn't go up or down) below the square number sequence (written in green) then that number, in this case -5, slots straight into the answer after the N squared figure. It happens in example 1 too.

[harrysmithson]

On the practice one of the first question why is it +3 and not just n2 - 2?

[tanyagreen]

hi do you have a video on finding a quadratic sequence from the nth term