$\"\"$

The expression is $\"\"$ .

Simplify the expression.

$\"\"$ (Original expression)

$\"\"$ (Powers of a quotient : $\"\"$ )

$\"\"$ (Powers of a product : $\"\"$ )

$\"\"$ (Powers of a power: $\"\"$ )

$\"\"$ (Definition of negative exponents: $\"\"$ )

$\"\"$ . $\"\"$

The simplified expression is $\"\"$ .