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# If x2 + y2 = 29, what is the value of (x − y)2 ?

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Intern
Joined: 06 Nov 2017
Posts: 2
If x2 + y2 = 29, what is the value of (x − y)2 ?  [#permalink]

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16 Nov 2017, 00:18
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Difficulty:

(N/A)

Question Stats:

67% (00:34) correct 33% (00:11) wrong based on 3 sessions

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If x2 + y2 = 29, what is the value of (x − y)2 ?

1. xy = 10
2. x = 5

It seems to me equation (x − y)2 can be solved through either 1 or 2 but the OG gives a different answer. Please help

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Math Expert
Joined: 02 Sep 2009
Posts: 50009
Re: If x2 + y2 = 29, what is the value of (x − y)2 ?  [#permalink]

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16 Nov 2017, 01:16
waitherakariuki wrote:
If x2 + y2 = 29, what is the value of (x − y)2 ?

1. xy = 10
2. x = 5

It seems to me equation (x − y)2 can be solved through either 1 or 2 but the OG gives a different answer. Please help

Discussed here: if-x-2-y-2-29-what-is-the-value-of-x-y-2-1-xy-105468.html

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: If x2 + y2 = 29, what is the value of (x − y)2 ? &nbs [#permalink] 16 Nov 2017, 01:16
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# If x2 + y2 = 29, what is the value of (x − y)2 ?

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