SOLUTION: Please help me solve. I don't know where to begin Find the y-intercept and x-intercept(s) for the function f(x)= x^3 - 5x^2 - 4x + 20 Please show work Thank You!

Algebra ->  Functions -> SOLUTION: Please help me solve. I don't know where to begin Find the y-intercept and x-intercept(s) for the function f(x)= x^3 - 5x^2 - 4x + 20 Please show work Thank You!      Log On


   

Question 356633: Please help me solve. I don't know where to begin
Find the y-intercept and x-intercept(s) for the function f(x)= x^3 - 5x^2 - 4x + 20
Please show work
Thank You!
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
To find the x-intercepts, set f(x) equal to zero:

= %28x-5%29%28x-2%29%28x%2B2%29+=+0
This means x = 5, 2, -2 are the x-intercepts.
To find the y-intercept, set x = 0, so that f(0) = 20, the y-intercept.