Question

Which expression is equivalent to r^9/r^3

Answer 1

Answer:

The correct option is B.

Step-by-step explanation:

The given expression is

$\frac{r^9}{r^3}$

According to the property of exponent,

$\frac{x^a}{x^b}=x^{a-b}$

Using this property of exponent, we get

$\frac{r^9}{r^3}=r^{9-3}$

$\frac{r^9}{r^3}=r^{6}$

The expression $r^{6}$ is equivalent to the given expression.

Therefore the correct option is B.

Answer 2

$\cfrac{r^9}{r^3} =r^{9-3}=r^6$