Write the expression with only positive exponents. Assume all variables represent nonzero numbers. Simplify if necessary.
-$\mathrm{r}^{-3}$

A) $\mathrm{r}^{1 / 3}$

B) $\frac{1}{r^{3}}$

C) $-\frac{1}{r^{3}}$

D) $-r^{3}$

Question

Write the expression with only positive exponents. Assume all variables represent nonzero numbers. Simplify if necessary.
-$\mathrm{r}^{-3}$

A) $\mathrm{r}^{1 / 3}$

B) $\frac{1}{r^{3}}$

C) $-\frac{1}{r^{3}}$

D) $-r^{3}$

Quizplus · Accepted Answer

To write the expression with only positive exponents, we use the rule that $x^{-a} = \frac{1}{x^a}$. Therefore, $\mathrm{r}^{-3} = \frac{1}{r^{3}}$.

Write the Expression with Only Positive Exponents r−3\mathrm{r}^{-3}r−3 A) r1/3\mathrm{r}^{1 / 3}r1/3