Respuesta :

devishri1977

Answer:

[tex]\sf r^6[/tex]

Step-by-step explanation:

Exponent law:

         [tex]\boxed{\bf \dfrac{a^m}{a^n}=a^{m-n}}[/tex]

In exponent division, if bases are same, subtract the powers.

 [tex]\sf \dfrac{r^9}{r^3}=r^{9-3}=r^{6}[/tex]