x^4/x^9

$$\\\frac{x^4}{x^9}=\frac{xxxx}{xxxxxxxxx}=\frac{1}{x^5}\\\\ $all the other x'es cancel out$\\\\ 0r \quad \frac{x^4}{x^9}=x^{4-9}=x^{-5}\\\\ \frac{1}{x^5}=x^{-5}$$

What happened to the question???