is there a quick trick to simplify the math? this took : PS Archive
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

It is currently 04 Dec 2016, 14:35
GMAT Club Tests

Close

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

is there a quick trick to simplify the math? this took

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Director
Director
avatar
Joined: 23 Sep 2007
Posts: 789
Followers: 5

Kudos [?]: 184 [0], given: 0

is there a quick trick to simplify the math? this took [#permalink]

Show Tags

New post 28 Feb 2008, 19:07
00:00
A
B
C
D
E

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.

is there a quick trick to simplify the math?

this took forever to factor out.
Attachments

ghhjh.JPG
ghhjh.JPG [ 6.22 KiB | Viewed 701 times ]

1 KUDOS received
Director
Director
avatar
Joined: 10 Sep 2007
Posts: 947
Followers: 8

Kudos [?]: 283 [1] , given: 0

Re: gmatprep PS: (squareroot of squareroot)^2 [#permalink]

Show Tags

New post 28 Feb 2008, 19:16
1
This post received
KUDOS
Assume 9 as A and Root80 As B.

So we have (Root(A+B) + Root(A-B))^2

Now Use (X+Y)^2 = X^2 + Y^2 + 2XY

So

Answer is (Root(A+B))^2 + (Root(A-B))^2 + 2(Root(A+B)Root(A-B))

= 9 + Root80 + 9 - Root80 + 2 (Root(9^2-Root80^2))

= 18 + 2(Root(81-80))

= 18 + 2

= 20
Re: gmatprep PS: (squareroot of squareroot)^2   [#permalink] 28 Feb 2008, 19:16
Display posts from previous: Sort by

is there a quick trick to simplify the math? this took

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

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®.