How do you rationalize the denominator and simplify #1/sqrt7#?

1 Answer
Apr 2, 2018

Answer:

#1/sqrt7=(1·sqrt7)/(sqrt7·sqrt7)=sqrt7/7#

Explanation:

In a fraction if we multiply and divide by the same number, the fraction doesn't varies. We choose #sqrt7# because we need to remove saquare root from denominator and we know that

#sqrta·sqrta=sqrt(a^2)=a# for whatever be #a in RR#