How do you simplify 5/sqrt10510?

2 Answers
Oct 4, 2016

sqrt10/2102

Explanation:

You have to follow a process called rationalizing when you have a denominator that is an irrational number.

In this process you multiply the numerator and denominator by the irrational number that is in the denominator.

sqrt10/sqrt101010

This is the same as multiplying by 1, so the look of the ratio but it is still equivalent.

sqrt10/sqrt101010 is the same as 1.

5/sqrt10*sqrt10/sqrt10=(5sqrt10)/sqrt100=(5sqrt10)/10=(cancel5sqrt10)/(cancel5*2)=sqrt10/2

Oct 4, 2016

Always multiply by the surd you want to eliminate (sqrt(10))

Explanation:

5/sqrt(10)=5/sqrt(10) * sqrt(10)/sqrt(10)
=(5*sqrt(10) ) / 10
=sqrt(10) / 2
=sqrt(2*5) / 2
=1/2sqrt(10)
=1/2 sqrt(2) sqrt(5)