3 (c*x + d)*(x - 1)*(x + 1)
3 (1 + x) *(-1 + x)*(d + c*x)
(1.0 + x)^3*(-1.0 + x)*(d + c*x)
5 4 2 4 3 -d + c*x + d*x - c*x - 2*c*x - 2*d*x + 2*c*x + 2*d*x