(a - 1)*(4*a + 3)*(2*a + 1)
(a - 1*1)*(4*a + 3)*(2*a + 1)
1*(a + 3/4)*(a + 1/2)*(a - 1)
((1*(a + 3/4))*(a + 1/2))*(a - 1)
(1.0 + 2.0*a)*(3.0 + 4.0*a)*(-1.0 + a)
2 3 -3 - 7*a + 2*a + 8*a
-3 - 7*a + 2*a^2 + 8*a^3