$\"\"$

The function is $\"\"$ .

Exclude the values for $\"\"$ .

$\"\"$ (The denominator can not be zero)

$\"\"$ (Rewrite $\"\"$ )

$\"\"$ (Factor)

$\"\"$ and $\"\"$ (Zero product property)

$\"\"$ and $\"\"$ (Simplify)

$\"\"$

The exclude values of $\"\"$ are $\"\"$ or $\"\"$ .