SOLUTION: Find [g•h] (x)and [h•g](x) G(x)=6x H(x)=-9x^3+11x^2-7x+3

Algebra ->  Radicals -> SOLUTION: Find [g•h] (x)and [h•g](x) G(x)=6x H(x)=-9x^3+11x^2-7x+3      Log On


   

Question 1000018: Find [g•h] (x)and [h•g](x)
G(x)=6x
H(x)=-9x^3+11x^2-7x+3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find [g•h] (x)and [h•g](x)
G(x)=6x
H(x)=-9x^3+11x^2-7x+3
----
g[h(x)] = g[9x^3+11x^2-4x+3] = 6[9x^3+11x^2-4x+3] = 54x^3 + 66x^2 - 24x + 18
---------------
h[g(x)} = h[6x] = 9(6x)^3 + 11(6x)^2 -7(6x) + 3
----
= 9*216x^3 + 11(36x^2 - 42x + 3
----
= 1944x^3 + 396x^2 - 42x + 3
=================
cheers,
Stan h.
-----------