Question 885669
f(x) = x^3 - x^2 - 25x + 25
set it equal to zero to get:
x^3 - x^2 - 25x + 25 = 0
separate into 2 parts as shown below:
(x^3 - x^2) - (25x - 25) = 0
factor out x^2 in the left part and factor out 25 in the right part to get:
x^2 * (x - 1) - 25 * (x - 1) = 0
factor out the common (x-1) term to get:
(x^2 - 25) * (x - 1) = 0
factor (x^2 - 25) to get:
(x - 5) * (x + 5) * (x - 1) = 0
those are your factors.
the zeroes are:
x = 5
x = -5
x = 1
a graph of your equation looks like this:
<img src = "http://theo.x10hosting.com/2014/jul0402.jpg" alt="$$$" </>