4 2 a + 9*a + 25 -------------- 2 a + a + 5
(25.0 + a^4 + 9.0*a^2)/(5.0 + a + a^2)
2 / 2\ 25 + a *\9 + a / ---------------- 5 + a*(1 + a)
2 5 + a - a