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if xy=1 what is the value of 2(x+y)^2/2(x-y)^2 ? thanks

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Manager
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if xy=1 what is the value of 2(x+y)^2/2(x-y)^2 ? thanks [#permalink]

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New post 24 May 2008, 23:59
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

if xy=1 what is the value of 2(x+y)^2/2(x-y)^2 ?

thanks,

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Re: GMAT prep [#permalink]

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New post 25 May 2008, 09:10
Can i have the options. Have tried my hand at the problem but am not sure. So please post the options as well. Waise im getting naswer as 1



abhaypratapsingh wrote:
if xy=1 what is the value of 2(x+y)^2/2(x-y)^2 ?

thanks,

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Re: GMAT prep [#permalink]

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New post 28 May 2008, 16:00
I get some really off the wall answer. Does anyone know the solution and explanation?
_________________

Factorials were someone's attempt to make math look exciting!!!

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Re: GMAT prep [#permalink]

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New post 29 May 2008, 10:35
abhaypratapsingh wrote:
if xy=1 what is the value of 2(x+y)^2/2(x-y)^2 ?

thanks,


Ya im not getting this either.

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Re: GMAT prep [#permalink]

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New post 29 May 2008, 12:24
Extremepbs wrote:
Ans is 16.


Can you show your work plz?

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Re: GMAT prep [#permalink]

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New post 29 May 2008, 12:28
this one has been on the board several times...there is a typo...one of the only ever seen in gmatprep. but it is copied correctly.

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Re: GMAT prep [#permalink]

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New post 29 May 2008, 13:47
jimmyjamesdonkey wrote:
this one has been on the board several times...there is a typo...one of the only ever seen in gmatprep. but it is copied correctly.


You wouldn't happen to have the links would you?

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Re: GMAT prep [#permalink]

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New post 29 May 2008, 18:06
This is probally a new (old) question that just got inserted (reinserted) into the most up to date version of the gmatprep. I was using the older version for a while and I had not encountered it despite having taken many tests. I updated the gmatprep version 2 days ago and I just encountered this question for the first time. I will post the screen capture when I finish with the verbal part.

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Re: GMAT prep [#permalink]

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New post 29 May 2008, 18:32
abhaypratapsingh wrote:
if xy=1 what is the value of 2(x+y)^2/2(x-y)^2 ?

thanks,


i believe the question is 2^(x+y)^2 / 2^(x-y)^2...

if you expand this out we get 2^4xy..xy=1 so 2^4=16

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Re: GMAT prep [#permalink]

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New post 29 May 2008, 19:35
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Here is the picture of the great white elephant.
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Re: GMAT prep [#permalink]

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New post 30 May 2008, 02:38
typo it is ... no way I can solve it .. I tried everything .. +1 for the screenie

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Re: GMAT prep [#permalink]

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New post 12 Nov 2008, 03:22
gmatnub wrote:
Here is the picture of the great white elephant.



Can anyone show step to solve this problem, please?

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Re: GMAT prep [#permalink]

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New post 13 Nov 2008, 01:21
very difficult...
anyone can show me how to derive to 4^2*xy?
Thanks!

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Re: GMAT prep [#permalink]

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New post 13 Nov 2008, 02:48
There must be a typo. I think what freshinha has explained could be true.

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Re: GMAT prep   [#permalink] 13 Nov 2008, 02:48
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