SOLUTION: what is the Y and X intercept for the following equation Y=x^3-16x i thought i should use foil to find X so i set y=0 but i am stuck trying to factor x^

Algebra ->  Systems-of-equations -> SOLUTION: what is the Y and X intercept for the following equation Y=x^3-16x i thought i should use foil to find X so i set y=0 but i am stuck trying to factor x^      Log On


   



Question 454328: what is the Y and X intercept for the following equation
Y=x^3-16x
i thought i should use foil to find X so i set y=0
but i am stuck trying to factor x^

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E3+-+16x+=+0
x%28x%5E2+-+16%29+=+0
x = 0
------------
x%5E2+-+16+=+0
x = ± 4