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))
125.0 - a^3
/ 2 \ -(-5 + a)*\25 + a + 5*a/
-(-5 + a)*(25 + a^2 + 5*a)