$\"\"$

The function $\"\"$ .

The domain of a function is all possible values of $\"\"$ .

Denominator of the function should not be the zero.

$\"\"$

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

The function $\"\"$ is discontinuous at $\"\"$ and $\"\"$ .

$\"\"$

The function is $\"\"$ .

The function can be written as $\"\"$ .

Cancel common terms.

$\"\"$ .

The function has removable discontinuity at $\"\"$ .

Non removable discontinuity is at $\"\"$ .

$\"\"$

Non removable discontinuity is at $\"\"$ .

Removable discontinuity is at $\"\"$ .