$\"\"$

The expression is $\"\"$ .

$\"\"$ (Group powers with the same base)

$\"\"$ (Apply quotient of powers property: $\"\"$ )

$\"\"$ (Substitute quotient of powers $\"\"$ and $\"\"$ )

$\"\"$ (Apply negative exponents property: $\"\"$ )

$\"\"$ (Multiply)

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

$\"\"$

The simplified expression is $\"\"$ .