Square Root Question????

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
This topic has expert replies
Source: — Quantitative Reasoning |

User avatar
Legendary Member
Posts: 519
Joined: Sat Jan 27, 2007 7:56 am
Location: India
Thanked: 31 times

by Neo2000 » Tue May 12, 2009 6:49 pm
Consider this as (2a) x (2a) where a = sqrt2

So you now have 4(a^2)
(sqrt2)^2 = 2
Which means you have 4(2) = 8