$\"\"$

\

\

The expression is $\"\"$ . \ \

\

$\"\"$ (Substitute: a = 4, b = 9) $\"\"$

\

First find the value of $\"\"$ .

\

The radical $\"\"$ indicates positive square roots of 2.

\

$\"\"$ (Factorize: $\"\"$ )

\

$\"\"$ (Recall: $\"\"$ ) $\"\"$

\

First find the value of $\"\"$ .

\

The radical $\"\"$ indicates positive square roots of 3.

\

$\"\"$ (Factorize: $\"\"$ )

\

$\"\"$ (Recall: $\"\"$ ) $\"\"$

\

Rewrite the expression

\

$\"\"$

\

= 6 (Multiply: $\"\"$ ) $\"\"$

\

The value of the expression is 6.