3 5*(a + 3) + (a + 3)*(-1)
3 -3 - a + 5*(3 + a)
-3.0 + 5.0*(3.0 + a)^3 - 1.0*a
/ 2 \ (3 + a)*\44 + 5*a + 30*a/
3 2 132 + 5*a + 45*a + 134*a