Quadratic nth Term method 2-

[@shujinko2944]

You wrote +8 my guy

[@atharvnaphade7017]

just do lagrange interpolation on 3 terms

[@TheSourovAqib]

This is meant for 16 yr olds. Lagrange interpolation is non spec for UK exam boards.
The method in the video is the standard method that they are supposed to know

[@Emily-fm7pt]

Tbh with 3 terms I’d just make a augmented matrix on my calculator and ask it to solve it lol

[@Swappr]

this is gcse maths the calculators cant even solve linear equations