Question

Which expression is equal to $\frac{7}{ \sqrt{} 5}$?

Answer 1

multiply both nominator and denominator by √5
(7*√5)/(√5*√5)=7√5/5

7√5/5

Answer 2

Answer:

The expression equivalent to the given expression is: $\frac{7\sqrt{5} }{5}$

Step-by-step explanation:

We are given the expression as $\frac{7}{\sqrt{5} }$

we will multiply and divide by $\sqrt{5}$ i.e. we use the method of "rationalizing a denominator"( the method used to remove a square root or a cube root from the denominator) to obtain the following expression:   $\frac{7\sqrt{5} }{5}$

Hence, the expression equivalent to $\frac{7}{\sqrt{5} }$ is $\frac{7\sqrt{5} }{5}$.