$\"\"$

\

The expression is $\"\"$ .

\

Multiply numerator and denominator by $\"\"$ because $\"\"$ is the conjugate of $\"\"$ .

\

$\"\"$

\

Apply difference of two squares: $\"\"$ . \ \

\

$\"\"$

\

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

\

Apply Power of a power property: $\"\"$ .

\

$\"\"$

\

For any real number b and for any positive integer n, $\"\"$ .

\

$\"\"$

\

$\"\"$ (Apply FOIL method)

\

Apply Product property of radicals: $\"\"$ .

\

$\"\"$

\

$\"\"$ $\"\"$

\

The simplified expression is $\"\"$ .