Respuesta :

Answer:

x=(-9+√57)/2

or x = (-9-√57)/2

Step-by-step explanation:

1. Move all terms to one side

x^2+9x+12-6=0

x^2+9x+6=0

2. Plug it in to the quadratic formula

x=(-9±√9^2-4*1*6)/(2)

x=(-9+√57)/2

or x = (-9-√57)/2