Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -3x2 + 12x + 36

A. Increasing on (-?, -2); decreasing on (-2, -?)
B. Increasing on (-?, 2); decreasing on (2, -?)
C. Increasing on (-2, ?); decreasing on (-?, -2)
D. Increasing on (-?, 0); decreasing on (0, -?)


Answer: B

Mathematics

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