Find Where Increasing/Decreasing -x^3+6x^2-9x-10

$- x^{3} + 6 x^{2} - 9 x - 10$

Graph the polynomial in order to determine the intervals over which it is increasing or decreasing.

Increasing on: $(1, 3)$

Decreasing on: $(- \infty, 1), (3, \infty)$

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