3x² = 12 - 5x
3x² + 5x - 12 = 0
3x² + 9x - 4x - 12 = 0
3x (x + 3) - 4 (x + 3) = 0
(3x - 4) (x + 3) = 0
3x - 4 = 0
3x = 0 + 4
3x = 4
(x = 4 / 3)
x + 3 = 0
x = 0 - 3
(x = - 3)
RESULTADOS:
X¹ = 4 / 3
X² = - 3
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3x² = 12 - 5x
3x² + 5x - 12 = 0
3x² + 9x - 4x - 12 = 0
3x (x + 3) - 4 (x + 3) = 0
(3x - 4) (x + 3) = 0
3x - 4 = 0
3x = 0 + 4
3x = 4
(x = 4 / 3)
x + 3 = 0
x = 0 - 3
(x = - 3)
RESULTADOS:
X¹ = 4 / 3
X² = - 3