Rationalizing the denominator

[Richay]

This stuff is trouble.

= sqrt(15)/20

= 7sqrt(2)/6

= sqrt(2)/15

So I get those three right but I don't get this one for some reason... :shock:

Help please

 

[stapel]

What method did you use for the exercises you correctly simplified?

What steps did you take for the last exercise? What answer did you get? Why do you think this answer is incorrect?

Please be specific. Thank you.

Eliz.

 

[Richay]

The answer is sqrt(6)/9

Right? I just got it.

I have weird ways of answering these kind of problems.
But I always know the square root and the certain number you have to divide it by ^_^