Question

~~~~~~~pra agora pfv~~~~~~​

Answer 1

$x = - 5 + \frac{ \sqrt{5 {}^{2} - 4 \times 1 \times 6 } }{2 \times 1} \\ x = - 5 + \frac{ \sqrt{ 25 - 24} }{2} \\ x = - 5 + \frac{ \sqrt{1} }{2} \\ x = \frac{ - 5 + 1}{2} \\ x = \frac{ - 4}{2} \\ x = - 2$