x^10/(-2.0 + x + x^2)
10
x
--------------
-2 + x*(1 + x) 8 7 3 5 6 4 2 -342 + 341*x
171 + x - x - 85*x - 21*x - 5*x + 3*x + 11*x + 43*x - ------------
2
-2 + x + x 10
x
----------------
(-1 + x)*(2 + x)