$\"\"$

The function is $\"\"$ .

The given function is a rational function.

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

Numerator of the rational function is $\"\"$ a radical expression.

So the expression under the square root (the radicand) must be nonnegative $\"\"$ .

Solve the inequality $\"\"$ .

$\"\"$ .

$\"\"$

Find which number make the fraction undefined, create an equation where the denominator is not equal to zero.

$\"\"$ .

$\"\"$

$\"\"$ .

The domain of $\"\"$ is all real numbers $\"\"$ and does not equals to 7.

Thus, the domain of $\"\"$ is $\"\"$ . $\"\"$

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