Answer: B x=+-2
Step-by-step explanation:
The Quadratic formula is -b+-[tex]-b+-\sqrt{(b^{2} -4ac)} /2a[/tex]
First make everything equal to 0
[tex]3x^2-18+6=0[/tex]
Then Simplify
[tex]3x^2-12=0[/tex]
Now use the formula where a=3, b=0, and c=-12
[tex]0+-\sqrt{0^2-4(3)(-12)[/tex] divided by 2(3)
[tex]0+-\sqrt{0-(-144)}/6[/tex]
[tex]\frac{0+-12}{6}[/tex]
then we get 12/6 and -12/6 which simplified is +-2
