Question

Equçâo Do 2 Grau x2 + 5x + 6=0

Answer 1

Delta = 5^2 - 4•1•6
Delta = 25 - 24 = 1

X1 = -5 + 1 / 4•1 = -4/4 = -1
X2 = -5 - 1 / 4 = -6/4 = -3/2

Answer 2

Olá, boa tarde ☺

Resolução:

x² + 5x + 6 = 0

Valor de delta.

Δ = b² - 4.a.c

Δ = (5)² - 4.1.6

Δ = 25 - 24

Δ = 1

Valores de x:

$x = \dfrac{-b \pm \sqrt{\Delta} }{2a} \\ \\ x = \dfrac{-5 \pm 1}{2} \\ \\ x'=\dfrac{-5 + 1 }{2} = \dfrac{-4}{2} = -2 \\ \\ x'' = \dfrac{-5 - 1}{2} = \dfrac{-6}{2} = - 3$

Bons estudos :)