!?!? How do you even do this without a calculator? square root "a"/ 1+square root "a"

Question

anonymous · Answer

Better view  of the equation 

$$\sqrt{a}/1+\sqrt{a}$$

anonymous · Answer

a^1/2
---------   right ?
1 + a^1/2

anonymous · Answer

no $$(\sqrt{a})/ (1+\sqrt{a)}$$

hero · Answer

multiply top and bottom by (1 - sqrt (a)) then simplify

anonymous · Answer

what  should i do here ...the main deal in these question is to have no root in denominator so what you can do is multiply and divide by 1 - rada

rad a is same as a^1/2

anonymous · Answer

the answer the book gave is : $$(\sqrt{a}-a)/ (1-\sqrt{a})$$

anonymous · Answer

I am not sure on how to do that Hero :/

hero · Answer

Yes, exactly...That's what you get when you multiply top and bottom by 1 - sqrt(a) , then simplify

hero · Answer

Okay, I can show you

hero · Answer

I will post a classroom

anonymous · Answer

Thanks :)

anonymous · Answer

oh? what is that?

hero · Answer

http://authorlive.com/aliveext/LoginToSession.aspx?SessionCode=cIjNmI80qlQkgDS96QMzCA%3d%3d

hero · Answer

You'll see

anonymous · Answer

ohh..Sorry I dont have a mic or webcam, will it still work?

hero · Answer

Yes

anonymous · Answer

sorry my bandwith is poor

myininaya · Answer

$$\frac{\sqrt{a}}{1+\sqrt{a}}*\frac{1-\sqrt{a}}{1-\sqrt{a}}=\frac{\sqrt{a}(1-\sqrt{a})}{1-a}=\frac{\sqrt{a}-a}{1-a}$$

hero · Answer

myininaya, I got the same answer you got....You just left before I could simplify it further

hero · Answer

My answer wasn't incorrect, just not simplified fully

myininaya · Answer

i didn't say it was.  i just wanted to type it myself lol