Respuesta:
(x + 1)(x - 3) < (x -1)(x -2)
x² -3x + x -3 < x² -2x -x +2
x² -2x -3 < x² -3x + 2
x² - x² -2x + 3x < 2 + 3
x < 5
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Respuesta:
(x + 1)(x - 3) < (x -1)(x -2)
x² -3x + x -3 < x² -2x -x +2
x² -2x -3 < x² -3x + 2
x² - x² -2x + 3x < 2 + 3
x < 5