For the function f(x) = (2(-2sin(1π(2x^2 + 5x + 4) - 2) + 3) - 3)/(-2(-2sin(1π(2x^2 + 5x + 4) - 2) + 3) - 3), find the number of maximal connected intervals in [-10, 10] where f'(x) > 0.

Present the answer in LaTex format: \boxed{Your answer}
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