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Algebra

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Re: Algebra

by veekay » Mon Aug 13, 2007 7:01 pm
tanyajoseph wrote:If xy=1, what is the value of 2(x+y)^2/2(x-y)^2 ?

A 2
B 4
C 8
D 16
E 32


OA is 16. Thanks for the help
Are you misssing something in the problem......

I am reading it as

[2(x+y)^2]/[ 2(x-y)^2]. If that is true, I don't think it is solvable. Moreover, if you take x=2 and y=1/2, answer is 25/9
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Re: Algebra

by beny » Mon Aug 13, 2007 8:02 pm
veekay wrote:I don't think it is solvable.
Agreed.
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by tanyajoseph » Tue Aug 14, 2007 12:46 am
This is a GMAT Prep question and it reads exactly the same:-|
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by gabriel » Tue Aug 14, 2007 12:47 am
.. i think the question would make more sense if the expression was ..

2^((x+y )^2)/2^((x-y )^2) ..
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