(2*a + 3)*(a - 3)
(2*a + 3)*(a - 1*3)
1*(a + 3/2)*(a - 3)
(1*(a + 3/2))*(a - 3)
(3.0 + 2.0*a)*(-3.0 + a)
2 -9 - 3*a + 2*a
-9 - 3*a + 2*a^2