(x+2) (x-1) (x-3) > 0

x + 2 = 0
x = -2
x - 1 = 0
x = 1
x - 3 = 0
x = 3
- - - - + + + + - - - - - + + +
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`````` -2 ```````` 1 ```````` 3
-2 < x < 1 atau x > 3