Starting with x0=0x_0 = 0x0=0, use the iteration formula xn+1=25−xn35\displaystyle x_{n+1} = \frac{2}{5} - \frac{x_n^3}{5}xn+1=52−5xn3 twice to find an estimate for the solution to x3+5x=2x^3 + 5x = 2x3+5x=2
124 exam-style questions on Eduqas GCSE Maths Iteration. Each one has a worked solution and a mark scheme showing where the marks go.