\"\"

\

The expression is \"\".

\

The value are \"\",\"\", \"\" and \"\".

\

\"\"        (Substitute \"\", \"\" and \"\")

\

               \"\"                             (Multiply)

\

              \"\"                                    (Substitute: \"\" and \"\")

\

              \"\"                                (Simplify)

\

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

\

\"\"

\

\"\".