Respuesta :

[tex] 3x^2-18x-6=\\
3(x^2-6x-2)=\\
3(x^2-6x+9-11)=\\
3((x-3)^2-11)=\\
3(x-3)^2-33 [/tex]

3x^2 - 18x - 6

= 3(x^2 - 6x - 2)

= 3 (x - 3)^2 - 9 - 2)

= 3(x - 3)^2 - 33 Answer