4 2 5*x - 3*x - 2
5*x^4 - 3*x^2 - 2
/ ____\ / ____\ | I*\/ 10 | | I*\/ 10 | (x + 1)*(x - 1)*|x + --------|*|x - --------| \ 5 / \ 5 /
(((x + 1)*(x - 1))*(x + i*sqrt(10)/5))*(x - i*sqrt(10)/5)
2 4 -2 - 3*x + 5*x
-2 - 3*x^2 + 5*x^4
2 / 2\ -2 + x *\-3 + 5*x /
-2 + x^2*(-3 + 5*x^2)
/ 2\ (1 + x)*(-1 + x)*\2 + 5*x /
(1 + x)*(-1 + x)*(2 + 5*x^2)
-2.0 + 5.0*x^4 - 3.0*x^2