$\"\"$

The expression is $\"\"$ .

Simplify the expression.

$\"\"$ (Original expression)

$\"\"$ (Divide by the common factors before multiplying)

$\"\"$ (Divide by the common factors $\"\"$ and $\"\"$ )

$\"\"$ (Multiply)

$\"\"$ .

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

$\"\"$ .