Find the x-coordinate(s) of the point(s) on the graph of f where the tangent line is horizontal. (Round your answer(s) to two

Question

Find the x-coordinate(s) of the point(s) on the graph of f where the tangent line is horizontal. (Round your answer(s) to two decimal places. Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)
f(x) = (x² + 16x + 6) (8 - x)
X =

Kunduz · Accepted Answer

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