7 3 5 5*x - 15*x + 10*x
5*x^7 - 15*x^3 + 10*x^5
/ ___\ / ___\ (x + 1)*x*(x - 1)*\x + I*\/ 3 /*\x - I*\/ 3 /
((((x + 1)*x)*(x - 1))*(x + i*sqrt(3)))*(x - i*sqrt(3))
3 / 4 2\ 5*x *\-3 + x + 2*x /
5*x^3*(-3 + x^4 + 2*x^2)
3 7 5 - 15*x + 5*x + 10*x
-15*x^3 + 5*x^7 + 10*x^5
3 / 2\ 5*x *(1 + x)*(-1 + x)*\3 + x /
5*x^3*(1 + x)*(-1 + x)*(3 + x^2)
5.0*x^7 + 10.0*x^5 - 15.0*x^3