$\"\"$

\

The expression is $\"\"$ .

\

The logarithmic value $\"\"$ .

\

Simplify the expression.

\

$\"\"$ (Original expression)

\

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

\

$\"\"$ (Product property of logarithm: $\"\"$ )

\

$\"\"$ (Multiply and divide by $\"\"$ )

\

$\"\"$ (Power property of logarithms: $\"\"$ )

\

$\"\"$ (Simplify)

\

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

\

$\"\"$ (Multiply)

\

$\"\"$ (Addition)

\

$\"\"$ .

\

Therefore, approximate value of the expression is $\"\"$ .

\

$\"\"$

\

The approximate value of the expression is $\"\"$ .