SOLUTION: Show the work done to find the polynomial function equation? Crosses the x-axis at -4,0, and 2. Lies above the x-axis between -4 and 0. Lies below the x-axis between 0 and 2. A

Algebra ->  Rational-functions -> SOLUTION: Show the work done to find the polynomial function equation? Crosses the x-axis at -4,0, and 2. Lies above the x-axis between -4 and 0. Lies below the x-axis between 0 and 2. A      Log On


   

Question 288523: Show the work done to find the polynomial function equation?
Crosses the x-axis at -4,0, and 2. Lies above the x-axis between -4 and 0. Lies below the x-axis between 0 and 2.
All I know is that it has x-intcepts at -4, 0, and 2.
Please help me?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the crossing points are the roots of the equation

if r is a root, then (x - r) is a factor

(x + 4) (x - 0) (x - 2) = 0

x^3 + 2x^2 - 8x = 0