Question

Me ajudem por favor !!!!!!

Answer 1

1)
${x}^{2} + 5x + 6 = 0$
${b}^{2} - 4.a.c$
${5}^{2} - 4 \times 1 \times 6$
$25 - 24$
$1$
$x = - b + - \sqrt{delta} \div 2 \times a$
$\frac{ - 5 + - 1}{2 \times 1}$
$\frac{ - 5 + - 1}{2}$
$x1 = \frac{ - 5 + 1}{2} = \frac{ - 4}{2} = - 2$
$x2 = \frac{ - 5 - 1}{2} = \frac{ - 6}{2} = - 3$
S={-2,-3}