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(x - x(x + 2))/(x + 2) >0
(x - x² - 2x)/(x + 2) > 0
(-x(x + 1))/(x + 2) > 0
______________________
-2 -1 0
++++ --------- +++++ -----
HP: {x | x < -2 atau -1 < x < 0}