precalc!!!!!
posted by L.Bianchessi .
Let f(x)=3x4x^2
Find f o f o f
So...
F(f(x))
I got a really big answer..... I think I might have done something wrong when doing the distributing algebraic work.

f(x) =3x4x^2
f(f(x))=3(3x4x^2)4(3x4x^2)^2
factor out (3x4x^2)
=(3x4x^2)(34(3x4x^2)
=(3x4x^2)(312x+16x^2)
f(f(f(x))=3(3x4x^2)(312x+16x^2)4(3x4x^2)(312x+16x^2)^2
factor out (3x4x^2)(312x+16x^2)
f(f(f(x))=(3x4x^2)(312x+16x^2)(34(3x4x^2)(312x+16x^2))
=(3x4x^2)(312x+16x^2)(34(9x36x^2+48x^312x^2+48x^364x^4)
simplifying
=(3x4x^2)(312x+16x^2)(34(9x48x^2+96x^364x^4)
=(3x4x^2)(312x+16x^2)(336x+192x^2+384x^3256x^4)
A really big answer