SOLUTION: For which x values of the graph of {{{ y=-x^3-x^2 }}} above the x axis? Show or explain how you found your answer (showing is good).

Question 970350: For which x values of the graph of above the x axis? Show or explain how you found your answer (showing is good).
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!

and the critical values of x are 0 and -1. This gives three intervals of the x-axis to check. Pick any value within each interval and check if y is positive or not positive.
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