gmat prep question

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yvonne12: Master | Next Rank: 500 Posts; Posts: 144; Joined: Wed Feb 07, 2007 4:13 pm

by yvonne12 » Wed Apr 25, 2007 11:40 am

(sqrt 9+ sqrt 80 + sqrt 9 -sqrt 80) ^2

=20

please explain

Source: Beat The GMAT — Problem Solving | Wed Apr 25, 2007 11:40 am

parore26: Master | Next Rank: 500 Posts; Posts: 147; Joined: Wed Apr 25, 2007 10:43 am; Location: New York, NY; Thanked: 19 times; Followed by:1 members

by parore26 » Wed Apr 25, 2007 1:07 pm

That is incorrect. Can you put this in the context of a question?

Cybermusings: Legendary Member; Posts: 559; Joined: Tue Mar 27, 2007 1:29 am; Thanked: 5 times; Followed by:2 members

by Cybermusings » Thu Apr 26, 2007 3:02 am

Thats not possible...if it's the way I read it in your question the answer will be 36 and not 20...can you scan and upload the exact question?

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