$\"\"$

Rewrite the expression using perfect square roots.

$\"\"$ (Perfect square roots of $\"\"$ )

Product property of square roots:For nonnegative real numbers a and b, $\"\"$ $\"\"$ $\"\"$ $\"\"$ (Find the square root: $\"\"$ )

$\"\"$ (Multiply: $\"\"$ ) $\"\"$

The simplified expression is $\"\"$ .