Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Oct 2014, 09:09

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

MATH PS from GmatPrep - x,y polynomial expression

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 26 Jun 2005
Posts: 6
Followers: 0

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

MATH PS from GmatPrep - x,y polynomial expression [#permalink] New post 25 Aug 2005, 21:39
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
If xy =1, then [2(x+y)^2]/[2(x-y)^2] =

answer choices:
2
4
8
16
32

I simply couldn't figure out how to solve this one. Evaluating the expressions leaves out a x or y in the final expression.
Please let me know

will post OA
Intern
Intern
avatar
Joined: 26 Jun 2005
Posts: 6
Followers: 0

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

 [#permalink] New post 26 Aug 2005, 07:21
that was the question in gmat prep test. I haven't left out anything. the OA is given as "8". This might be the case of erroneous question.
Intern
Intern
avatar
Joined: 27 Aug 2005
Posts: 33
Followers: 0

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

 [#permalink] New post 13 Sep 2005, 15:59
I am struck with this problem too, can someone please help
VP
VP
avatar
Joined: 22 Aug 2005
Posts: 1128
Location: CA
Followers: 1

Kudos [?]: 32 [0], given: 0

 [#permalink] New post 13 Sep 2005, 16:33
cannot find ans with the information given. the most i can simplify is:

[2(x+y)^2]/[2(x-y)^2] =

(x+y)^2 / (x-y)^2 =

[(x - y) ^ 2 + 4] / (x - y) ^ 2 =

4/ (x - y) ^ 2 =

4 / (x^2 + y^2 - 2)
  [#permalink] 13 Sep 2005, 16:33
    Similar topics Author Replies Last post
Similar
Topics:
1 Need help to solve these maths from GMAT Prep msneemo 3 10 Feb 2011, 15:08
PS from Gmat Prep nesta 1 23 Dec 2009, 09:33
PS -- FROM GMAT PREP raghavs 4 21 Dec 2009, 09:01
PS - Geometry Q From GmatPrep GmatInstinct 5 26 Sep 2006, 11:35
Display posts from previous: Sort by

MATH PS from GmatPrep - x,y polynomial expression

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| 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®.