All the real numbers except $2$ and $-2$.
Work Step by Step
We must exclude the values for which the denominator is $0$, thus $x\ne2$ and $x\ne-2$. Thus the domain is all the real numbers except $2$ and $-2$.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.