how do i rationalize the denominator if it is x

Question

I do not know how to rationalize the denominator under the square root because the fractions denominator is x.

Answer 1

Your question is extremely vague so I'm not sure if I understand it, however I will create an example for you and maybe this will help answer your question.

 

For example,  "5 divided by the square root of x".

 

Given:

5 / (sqrt x)

 

Rationalize by multiplying top and bottom by (sqrt x)

(5*(sqrt x)) / ((sqrt x)*(sqrt x))

 

Simplify. The (sqrt x)^2 = the square root of x squared = x.

(5*(sqrt x)) / x

 

 

So, 5 / (sqrt x) = (5*(sqrt x)) / x = 5 times the square root of x, divided by (a.k.a. "all over") x