Question

X elevado a 2 + 13x + 22 = 0

Answer 1

$x {}^{2} + 13x + 22 = 0 \\ delta = {13}^{2} - 4.1. 22 \\ delta = 169 - 88 = 8 1 \\ x1 = \frac{ - 13 + 9}{2.1} = \frac{ - 4}{2} = - 2 \\ x2 = \frac{ - 13 - 9}{2} = \frac{ - 22}{2} = - 11$

Espero ter ajudado! ^^