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Pls help - last day before test

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LSB: Master | Next Rank: 500 Posts; Posts: 229; Joined: Thu Nov 08, 2007 3:47 pm; Thanked: 14 times; GMAT Score:750

by LSB » Mon Sep 01, 2008 11:31 am

GMATPrep Question. Could you pls explain your answer?

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Source: Beat The GMAT — Problem Solving | Mon Sep 01, 2008 11:31 am

LSB: Master | Next Rank: 500 Posts; Posts: 229; Joined: Thu Nov 08, 2007 3:47 pm; Thanked: 14 times; GMAT Score:750

by LSB » Mon Sep 01, 2008 1:02 pm

the attachments in this post are quite large. I am reattaching as word documents.

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roots2.doc: roots; (69.5 KiB) Downloaded 80 times

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parallel_chase: Legendary Member; Posts: 1153; Joined: Wed Jun 20, 2007 6:21 amFollowed by: 2 members; Thanked: 146 times

by parallel_chase » Mon Sep 01, 2008 1:22 pm

refer this

https://www.beatthegmat.com/help-tricky- ... 14961.html

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anju: Master | Next Rank: 500 Posts; Posts: 258; Joined: Thu Mar 29, 2007 3:15 amFollowed by: 1 member; Thanked: 7 times

by anju » Mon Sep 01, 2008 1:27 pm

use the formula (a+b)^2 = a^2+2ab+b^2
lemme know if you still have doubts

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LSB: Master | Next Rank: 500 Posts; Posts: 229; Joined: Thu Nov 08, 2007 3:47 pm; Thanked: 14 times; GMAT Score:750

by LSB » Mon Sep 01, 2008 1:43 pm

Thanks guys. Makes sense

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