SOLUTION: Find all values of c such that $c^3 + 4c > 5c^2. Answer with interval notation.

Question 1030088: Find all values of c such that $c^3 + 4c > 5c^2. Answer with interval notation.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!

The three critical values of c are -4, -1, 0. These cut the c number line into four intervals. Now what do you think you can do?
Answer by MathTherapy(10557) (Show Source): You can put this solution on YOUR website!

Find all values of c such that $c^3 + 4c > 5c^2. Answer with interval notation.

3 critical points: 0, 1, and 4, which result in the following 4 intervals to check:
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