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Chris Peckover
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Oct 13 to Jan 7, 2027

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Tue, Thu · 8:00 to 10:00 PM ET
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40 live hours + 6 months of GMAT OnDemand
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Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

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Sun · 9:30 AM to 12:30 PM ET
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  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
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Source: — Problem Solving |
Legendary Member
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Joined: Tue May 17, 2011 9:55 amFollowed by: 53 members
Location: India
Thanked: 375 times

by Frankenstein » Wed Jun 15, 2011 11:29 am
Hi,
(sqrt 7 + sqrt 7)^2 = (2*sqrt 7)^2 = (2^2)*(sqrt 7)^2 = 4*7 = 28.
Cheers!

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