Question 949689
Plug everything in and simplify.  Just fitting the formula shown and some algebra steps.


Here is the raw unsimplified form:


{{{(((x+2)/(x-2))-4)/((x+2)/(x-2))}}}


Examine that expression to see how it is made.
The numerator is the composition {{{f(g(x))}}} as shown in that part for h(x).
The denominator is {{{g(x)}}} as shown in that other part of {{{h(x)}}}.


The most important thing to be able is to form that expression for h(x) as defined.  The next thing to do is to simplify that expression.