5 3 2 y + y + y + 1
y^5 + y^3 + y^2 + 1
/ ___\ / ___\ | 1 I*\/ 3 | | 1 I*\/ 3 | (x + 1)*(x + I)*(x - I)*|x + - - + -------|*|x + - - - -------| \ 2 2 / \ 2 2 /
((((x + 1)*(x + i))*(x - i))*(x - 1/2 + i*sqrt(3)/2))*(x - 1/2 - i*sqrt(3)/2)
2 3 5 1 + y + y + y
1 + y^2 + y^3 + y^5
1.0 + y^2 + y^3 + y^5
/ 2\ / 2 \ (1 + y)*\1 + y /*\1 + y - y/
(1 + y)*(1 + y^2)*(1 + y^2 - y)
2 / / 2\\ 1 + y *\1 + y*\1 + y //
1 + y^2*(1 + y*(1 + y^2))