SOLUTION: Solve the inequality. x^3 +4x^2 ≤4x +16 Write your answer as an interval or union of intervals.

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Question 452415: Solve the inequality.
x^3 +4x^2 ≤4x +16


Write your answer as an interval or union of intervals.

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%28x+%2B4%29%3C=4%28x+%2B4%29
x%5E2%28x+%2B4%29%2F+%28x+%2B4%29+%3C=4
x%5E2+%3C=4
x<=+-sqrt%284%29
x+<=+-2
Solutions:
-2%3C=x%3C=2