Upgrade subject to access all content

What is the domain of the function:

$$f(x) = \frac { x-3 }{ { x }^{ 2 }-4x-12 } $$

$ \{ x: x\neq 3\} $

$ \{ x: x\neq -2,3,6\} $

$ \{ x: x\neq -6,2,3\} $

$ \{ x: x\neq -6,2\} $

$ \{ x: x\neq -2,6\} $