Let $m(x)=e^{x}$ And $n(x)=\frac{x^{4}}{x+5}$ Does $m(n(x))=\frac{e^{4 x}}{e^{x}+5}$

Let $m(x)=e^{x}$ and $n(x)=\frac{x^{4}}{x+5}$ . Does $m(n(x))=\frac{e^{4 x}}{e^{x}+5}$ ?