Question

i need help with this please !!

Answer 1

number 18

Answer 2

I agree with what you wrote

f(fx)(5). This will just get messy. It's the same procedure as gof or fog, so you really don't need g(x) to solve this one

Answer 3

so answer is 8

Answer 4

Not exactly.
For composite function fof,

Wherever you see an 'x' in the f(x) function, you have to replace it with the f(x) function

Answer 5

ohh so how would it look like ?

Answer 6

This is the messy part.

So f(x) is \[x^2-4x+3\]

You see an x twice in that function, right? So you have to replace that x with the f(x) function itself. So it would look like:

\[(x^2-4x+3)^2-4(x^2-4x+3)+3\]

See how I replaced those X's with the whole f(x) function?

Answer 7

Now we can plug in 5 to get

\[((5)^2-4(5)+3))^2-4((5^2)-4(5)+3))+3\]

Answer 8

so theres two fucntions to plugin ?