$\"\"$

\

The matrices are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

\

Evalulate the expression is $\"\"$ .

\

Find $\"\"$ :

\

$\"\"$ and $\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ in $\"\"$ to find $\"\"$ value.

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$

\

The value of $\"\"$ is $\"\"$ .