Question

7.2 #13 math 80 I wil post the image of question...

Answer 1

The given expression is:

`\frac{(r^{(1)/(2)}s^{(5)/(7)})^(14)}{r^5}`

Applying laws of exponents the expression becomes:

`\frac{r^{(1)/(2)*14}s^{(5)/(7)*14}}{r^5}`

This gives

`(r^7s^(10))/(r^5)`

This further gives

`r^(7-5)s^(10)=r^2s^(10)`

Therefore the solution is

`r^2s^(10)`