Directions: A function $h(x)$ is defined in terms of a differentiable function $f(x).$ Find an expression for $h^{\text{'}}(x).$

$h(x)=\frac{f(x^4+2)}{x}$

If necessary, you can use expressions like $f^{\text{'}}(x^2)$ in your answer.

$h^{\text{'}}(x)=$