GCSE Secondary Maths Age 13-17 - Algebra: Iterative Methods - Explained

The video tutorial explains how to find a solution for the equation X^3 + X = 7 between X=1 and X=2 by substitution. It then demonstrates rearranging the equation to express X in terms of the cube root. Finally, it uses an iteration formula to estimate the solution, emphasizing the importance of using a calculator for precise calculations.

Describe the iterative formula used to estimate the solution for X.

What is the final answer obtained after three iterations using the iterative formula?