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pmenon
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Square root 15 Oct 2008, 00:12
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\(sqrt(4x^2 + 4xy + y^2)\)

x=29
y=-15

dont know what the answer choices are, but am interested in seeing the approaches :)



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scthakur
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Square root 15 Oct 2008, 00:27
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In the absence of complete question it is difficult to take the approach.

Asuuming, it is a DS question, the expression will be sqrt[(2x + y)^2].

In order to get the value of expression, both x and y are required. Hence, C.
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alive
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Square root 15 Oct 2008, 02:43
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Is it a data sufficiency question? :roll: Please specify.
As scthakur posted before, if DS type question then answer is (c).
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pmenon
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Square root 30 Oct 2008, 13:29
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sorry, its a problem solving question
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leonidas
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Square root Updated on: 30 Oct 2008, 13:57
Originally posted by leonidas on 30 Oct 2008, 13:36.
Last edited by leonidas on 30 Oct 2008, 13:57, edited 1 time in total.
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(2x+y)^2 = 43

Edit:(2x+y) = 43

Forgot to remove the square.
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x2suresh
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Square root 30 Oct 2008, 13:36
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pmenon
\(sqrt(4x^2 + 4xy + y^2)\)

x=29
y=-15

dont know what the answer choices are, but am interested in seeing the approaches :)
Show more


"]\(sqrt(4x^2 + 4xy + y^2)\)
= 2x+y = 2*29-15 =43
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pmenon
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Square root 31 Oct 2008, 14:30
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i must be missing something really simple. can one of you bright folks break it down step by step ?
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GMAT TIGER
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Square root 31 Oct 2008, 14:46
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pmenon
i must be missing something really simple. can one of you bright folks break it down step by step ?
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Is your question complete?

I mean is the given question a complete one? Source?
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kandyhot27
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Square root 31 Oct 2008, 14:47
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pmenon
i must be missing something really simple. can one of you bright folks break it down step by step ?
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4x^2 + 4xy + y^2 = (2x + y)^2



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
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Thank you for understanding, and happy exploring!