SOLUTION: Solve: x^3+4x^2-4x-16=0

Algebra ->  Expressions-with-variables -> SOLUTION: Solve: x^3+4x^2-4x-16=0      Log On


   

Question 268256: Solve:
x^3+4x^2-4x-16=0
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
testing for roots using factors of d/a, gives 2 as a root ___ so x-2 is a factor

(x-2) (x^2+6x+8) = 0

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