\"\"

\

The expression is \"\".

\

Factorize the denominator.

\

\"\"

\

\"\"

\

\"\".

\

Partial fraction decomposition:

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\".

\

\"\"

\

Compare coeffcients of \"\".

\

\"\"

\

\"\".

\

Compare constant terms.

\

\"\"

\

Substitute \"\".

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\".

\

Substitute \"\" in \"\".

\

\"\"

\

\"\".

\

Substitute \"\" and \"\" in \"\".

\

\"\"

\

\"\".

\

\"\"

\

\"\".