$\"\"$

\

The expression is $\"\"$ .

\

Simplify the expression.

\

$\"\"$ (Original expression)

\

$\"\"$ (Rationalize the denominator)

\

$\"\"$ (Formula: $\"\"$ )

\

$\"\"$ (Property: $\"\"$ )

\

$\"\"$ (Add)

\

$\"\"$ (Subtract)

\

$\"\"$ (Simplify)

\

$\"\"$ .

\

$\"\"$

\

The simplified expression value is $\"\"$ .