$\"\"$

The expression is $\"\"$ .

Simplify the expression.

$\"\"$ (Factors)

$\"\"$ (Divide out common factors) \ \

$\"\"$ .

Therefore, the simplified expression is $\"\"$ .

Find excluded value for $\"\"$ .

$\"\"$ (The denominator can be zero) \ \ $\"\"$ (Factors) \ \

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

Therefore, the excluded value is $\"\"$ or $\"\"$ . $\"\"$

The simplified expression is $\"\"$ .

The excluded value is $\"\"$ or $\"\"$ .