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4x² + 4x +1 + 5x +4 < 0
4x² + 9x + 5 < 0
x1 = -1
x2 = - 5/ 4
4xkuadrat + 9x +5 < 0
4x(x+1) 5(x+1)
(4x+5) (x+1)
x1 > -5/4
x2 > -1