how to solve f(g(x))

Question

how do you solve f(g(x)) if f(x)=x^2-4 anf g(x)=x-2.

Answer 1

Given that :

-------->(1)

--------->(2)

To find ,

Apply formula :  .

From (2)

From (1)

.

Therefore,.

Comments

not bad, please try to give simple and effective answer.