$\"\"$

The expression is $\"\"$ .

Apply zero exponent property: for any nonzero number a, $\"\"$ .

$\"\"$

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

$\"\"$

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

$\"\"$

Apply negative exponent property: $\"\"$ .

$\"\"$

The value of $\"\"$ .