Bisection, Newton's, and secant method help!

Can't seem to find the answer to this one.

Question:

Using the bisection method, Newton's method, and the secant method, find the largest positive root correct to three decimal places of x^3-5x+3=0. (Hint: All roots are in [-3, +3]).

Not really sure what the bisection method is but here's the newton's method and the secant method.

Bisection method:

Newton's Method: Xn+1=Xn-(f(xn)/f '(xn)

Secant Method: Xn+1=Xn-((Xn-Xn-1)/(f(xn)-f(xn-1))) * f(xn)

Any help would be appreciated!