The expression given is \( r - 4p - 8 \). It does not appear to be in any standard form that requires additional simplification, as it represents a linear expression rather than a rational expression or product of terms.
However, the options provided seem to hint at different types of expressions. The closest interpretation with simplifications would be:
- \(-r^4 - p^8\) represents a completely different expression.
- \( \frac{1}{r^4} + \frac{1}{p^8}\) represents a different rational expression.
- \( \frac{r^4}{p^8} \) represents a rational expression as well.
- \( \frac{1}{r^4p^8} \) further represents another rational form.
None of these options accurately reflect the expression \( r - 4p - 8 \). But if you were looking for a way to express \( r - 4p - 8 \) in terms of the options listed, none seem to be a valid simplification.
Would you like help with a different type of expression or a different question?