1
-------------------
_______
2*(2 + x)*\/ x + 1 / 1 2 \
-|----- + -----|
\1 + x 2 + x/
-------------------
_______
4*\/ 1 + x *(2 + x) 1 3 1
-------- + ---------- + -----------------
2 2 2*(1 + x)*(2 + x)
(2 + x) 8*(1 + x)
-----------------------------------------
_______
\/ 1 + x *(2 + x)