/ 2 \ (a - 5)*\a + 5*a + 25/
(a - 1*5)*(a^2 + 5*a + 25)
3 -125 + a
-125 + a^3
/ ___\ / ___\ | 5 5*I*\/ 3 | | 5 5*I*\/ 3 | 1*(a - 5)*|a + - + ---------|*|a + - - ---------| \ 2 2 / \ 2 2 /
((1*(a - 5))*(a + (5/2 + 5*i*sqrt(3)/2)))*(a + (5/2 - 5*i*sqrt(3)/2))
(-5.0 + a)*(25.0 + a^2 + 5.0*a)