$\"\"$

The expression is $\"\"$ .

$\"\"$ (Assosiative property of multiplication: $\"\"$ )

$\"\"$ (Multiply)

$\"\"$ (Product property of square roots: $\"\"$ )

$\"\"$ (Substitute: $\"\"$ )

$\"\"$ (Multiply)

$\"\"$ .

The simplified expression is $\"\"$ .

$\"\"$

$\"\"$ .