Question: please show your work to help me better understand. Consider the function f(x) = - 2x3+ 33x - 108x + 4. For this function there

please show your work to help me better understand.

Consider the function f(x) = - 2x3+ 33x - 108x + 4. For this function there are three important -open intervals: ( - co, A), (A, B), and (B, co) where A and B are the critical numbers. Find A and B For each of the following open intervals, tell whether f(I) is increasing (type in INC) or decreasing (type in DEC). ( - 00, A]: (A, B): (B, Do)

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