$\"\"$

\

The expression is $\"\"$ .

\

Simplify the expression.

\

$\"\"$ (Factors)

\

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

\

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

\

$\"\"$ .

\

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

\

Find excluded value for $\"\"$ .

\

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

\

$\"\"$ (Factors)

\

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

\

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

\

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

\

The simplified expression is $\"\"$ .

\

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