Answer:
See below.
Step-by-step explanation:
So we have the two functions:
[tex]f(x)=x^2\text{ and } g(x)=x-3[/tex]
And we want to find:
[tex]f(g(x))[/tex]
So, substitute g(x) into f(x):
[tex]f(g(x))=(g(x))^2=(x-3)^2[/tex]
And we're done!
If preferred, we can expand:
[tex]f(g(x))=x^2-6x+9[/tex]