Question

Find the partial fractions decomposition.

Answer 1

http://assets.openstudy.com/updates/attachments/5196a885e4b0c719b63f9913-onegirl-1368828045033-untitled6.jpg

Answer 2

\[\frac{2x^2+4}{(x^2+4)^2}=\frac{Ax+B}{x^2+4}+\frac{Cx+D}{(x^2+4)^2}\]
Solve for \(A,B,C,D\).

If you're not sure how to do that, here's a hint: get rid of the fractions, then expand the right hand side and match up like terms (powers of x).