/                ___\ /                ___\
          |      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))
/ 2 \ (5 + a)*\25 + a - 5*a/
(5 + a)*(25 + a^2 - 5*a)