find the value of the expression : PS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 22 Jan 2017, 21:54

### 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

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

# find the value of the expression

Author Message
Director
Joined: 23 Sep 2007
Posts: 789
Followers: 5

Kudos [?]: 185 [0], given: 0

find the value of the expression [#permalink]

### Show Tags

21 Jun 2008, 14:04
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.

find the value of the expression
Attachments

question2.gif [ 653 Bytes | Viewed 741 times ]

Senior Manager
Joined: 06 Mar 2006
Posts: 492
Followers: 7

Kudos [?]: 179 [0], given: 1

### Show Tags

21 Jun 2008, 19:12
gmatnub wrote:
find the value of the expression

3sqrt80=12sqrt5

3(9-4sqrt5)/[(9+4sqrt5)(9-4sqrt5)]=27-12sqrt5/(81-80)=27-12sqrt

sqrt(12sqrt5+27-12sqrt5)=sqrt27

do they have sqrt27 as answer? Or you can simplify it to 3sqrt3
Re: mgmat PS   [#permalink] 21 Jun 2008, 19:12
Display posts from previous: Sort by