4 2 y + 9*y + 8
y^4 + 9*y^2 + 8
/ ___\ / ___\ (x + I)*(x - I)*\x + 2*I*\/ 2 /*\x - 2*I*\/ 2 /
(((x + i)*(x - i))*(x + 2*i*sqrt(2)))*(x - 2*i*sqrt(2))
4 2 8 + y + 9*y
8 + y^4 + 9*y^2
8.0 + y^4 + 9.0*y^2
2 / 2\ 8 + y *\9 + y /
8 + y^2*(9 + y^2)
/ 2\ / 2\ \1 + y /*\8 + y /
(1 + y^2)*(8 + y^2)