I presume you meanOriginally Posted byNimmy

This type of problem requires fractional decomposition.

Thus, express

Now multiply the identity by

Thus,

Open sesame,

Now that happens when

Solving this we get that,

Thus,

Thus,

But,

=

Q.E.D.

Note it is possible I made a mistake somewhere I am so tired right now and it took me a long time to write this in LaTeX form.