You can put this solution on YOUR website! (x-1)(x-2)(x-3)<0
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<...-....1....+....2...-.....3....+....>
solution: (-∞,1) U (2,3)
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(x+3)(1-x)/(x+4)(x-5)>0
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<....+..-4....-...-3...+....1...-....5..+...>
Solution: (-∞,-4) U (-3, 1) U (5,∞)