Question

what is the answer of this question​

Answer 1

Answer:

${a}^{r} - {2}^{r}$

Step-by-step explanation:

${(a - b)}^{m} = {a}^{m} - {b}^{m } \\ \\ {(a - b)}^{r} = {a}^{r} - {2}^{r}$