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³log x (2x - 3) < ³log 27
x (2x - 3) < 27
2x² - 3x - 27 < 0
2x² + 6x - 9x - 27 < 0
2x (x + 3) - 9 (x + 3) < 0
(2x - 9) (x + 3) < 0
x = 9/2 atau x = -3
Jadi, penyelesaiannya -3 < x < 9/2