3 2 x + 12*x + 48*x + 64
x^3 + 12*x^2 + 48*x + 64
x + 4
3 2 64 + x + 12*x + 48*x
64 + x^3 + 12*x^2 + 48*x
64 + x*(48 + x*(12 + x))
3 (4 + x)
(4 + x)^3
64.0 + x^3 + 12.0*x^2 + 48.0*x