Question: For the function below, find (a) the critical numbers; (b) the open intervals where the function is increasing; and (c) the open intervals where it

For the function below, find (a) the critical numbers; (b) the open intervals where the function is increasing; and (c) the open intervals where it is decreasing. f (x) = 8x -54x2-672x+9 (a) Find the critical number(s). First, find f' (x). F' (x) =]
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