Answer:

Explanation:
Ok so I see a square root is on the whole thing.
I'm going to let the very outside function by
.
Now I'm can't just let the inside function by one function
because we need three functions.
So I'm going to play with
a little to simplify it.
You could do long division. I'm just going to rewrite the top as
.
.
So I'm going to let the next inside function after h be
.
Now my last function will be
.
So my order is h(m(n(x))).
Let's check it:




