Question

3x ao quadrado menos x e menos 1 =0​

Answer 1

Resposta:

$3x^2 -x - 1=0$

Aplicando a fórmula de Bhaskara:

$a = 3\\b = -1\\c = -1$

$x = \frac{1 \pm\sqrt{(-1)^2 - (4.3.-1)} }{2.3}$

$x = \frac{1 \pm \sqrt{(-1)^2 -(-12)} }{6}$

$x = \frac{1 \pm \sqrt{13} }{6}$

$x_1 = \frac{1+\sqrt{13} }{6}$

$x_2=\frac{1-\sqrt{13} }{6}$