$\"\"$

The rational function is $\"\"$ .

All possible values of $\"\"$ is domain of the function.

Since the function $\"\"$ is a rational function, the denominator of the function should not be zero.

$\"\"$

$\"\"$ and $\"\"$ .

Thus, the domain of the function is all real expect $\"\"$ .

Domain is $\"\"$ .

$\"\"$

The domain of the function is $\"\"$ .