Question

Resolva usando a fórmula de bháscara (com cálculos)

Answer 1

3x² + 7x - 6 = 0
a = 3
b = 7
c = -6
Δ = 7² - 4 * 3 * (-6)
Δ = 49 - 12 * (-6)
Δ = 49 - (-72)
Δ = 121
$\frac{-7\pm\sqrt{121} }{6} = \frac{-7\pm11}{6}$
$x_{1} = \frac{-7 + 11}{6} = \frac{4}{6} = 0.66666...$
$x_{2} = \frac{-7-11}{6}= \frac{-18}{6} = -3$