how do i solve this question?? and what it means??

Question

use the bisection method by hand, with the initial guesses of x1=3.75 and xu=5.0, find the root of the following equation. stop the iteration when the approximation error falls below 1.0%. x^3 – x^2 – 10x - 8

Answer 1

Solve the equation by forming factors.You will get three solutions.
Choose proper solution in betwwen 3.75 & 5.Then use bisection method to solve the same equation.Stop when answer for particular iteration will satisfy the relation:
(Answer obtained by forming roots-Answer by bisection method)divided by answer obtained by forming roots will be equal to 0.01

Answer 2

Calculus 101 stuff: the fundamental is Mean Value like the number game kids play, meaning if one guess produce function estimation is higher than the correct answer, one produces lower, then the answer must be in between.

Think how would you do Binary Search on a sorted list.