For the function f(x) = (-1(-1|(-1x^2 - 3x + 1) - 3| - 3) + 2)/(-1(-1|(-1x^2 - 3x + 1) - 3| - 3) - 1), 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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