x^3=17x+34

= x^3 - 17x - 34 = 0

x^3 - 17x - 34 (that is f(x))

X0 = 6

Find X1 and |X1-X0|

So Xn+1 = Xn - f(Xn) / f'(Xn)

So Xn+1 = Xn - Xn^3 - 17xn - 34 / 3xn^2 -17n?

how do i derive that 17xn? I'm confused at that part basically, because i dont know what to do with 17n (if i did do that right).

thanks.