Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = 2x2 + 8x - 10
A. Increasing on (-2, ?); decreasing on (-?, -2)
B. Increasing on (2, ?); decreasing on (-?, 2)
C. Increasing on (8, ?); decreasing on (-?, 8)
D. Increasing on (-4, ?); decreasing on (-?, -4)
Answer: A
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