[no username inserted]

How can I solve an equation using the successive approximation method. For example an equation of degree 3 for calculation the pH of 0.01 M Oxalic acid :

(H+)^3 + 3.8×10^-2(H+)^2 - 3.781×10^-4(H+) - 3.8×10^-8=0

[curiouscat]

Move all except one H+ term to one side. Then choose a guess and iterate.