It is currently 21 Mar 2018, 15:43

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# gmat prep

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Intern
Joined: 26 Jan 2009
Posts: 22
Schools: University of Toronto, Schulich, Western, Queens
gmat prep [#permalink]

### Show Tags

11 Apr 2009, 16:14
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

i've been working on this for more than 10 minutes....it's driving me crazy...someone help please
Attachments

root.jpg [ 8.34 KiB | Viewed 930 times ]

Manager
Joined: 05 Jan 2009
Posts: 76
Re: gmat prep [#permalink]

### Show Tags

11 Apr 2009, 16:23
ANS:20.
(a+b)^2=a^2+b^2+2ab.

9+80^0.5+9-80^0.5+2(9^2-80)=18+2=20.
Re: gmat prep   [#permalink] 11 Apr 2009, 16:23
Display posts from previous: Sort by

# gmat prep

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.