Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 19 Jun 2013, 10:24
Customize  |  Hide

Search
Register
New posts
Unanswered

Factoring...? (m02 #8)

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Intern
Intern
Joined: 21 Feb 2008
Posts: 43
Followers: 1

Kudos [?]: 4 [0], given: 0

Factoring...? (m02 #8) [#permalink] New post 27 Feb 2008, 22:50
There is this four step factor... and I just don't get step #2.

x(x-1) > y(y-4)
(y+1)(y+1-1) > y(y-4)
y+1 > y-4
1 > 4
Director
Director
Joined: 05 Jan 2008
Posts: 715
Followers: 2

Kudos [?]: 69 [0], given: 0

GMAT Tests User
Re: Factoring...? (m02 #8) [#permalink] New post 28 Feb 2008, 00:59
looks like X has been substituted by y+1
_________________

Persistence+Patience+Persistence+Patience=G...O...A...L

CEO
CEO
User avatar
Joined: 29 Aug 2007
Posts: 2528
Followers: 41

Kudos [?]: 364 [0], given: 19

GMAT Tests User
Re: Factoring...? (m02 #8) [#permalink] New post 28 Feb 2008, 02:18
Liquid wrote:
There is this four step factor... and I just don't get step #2.

x(x-1) > y(y-4)
(y+1)(y+1-1) > y(y-4)
y+1 > y-4
1 > 4


post the question in detail.
_________________

Verbal: new-to-the-verbal-forum-please-read-this-first-77546.html
Math: new-to-the-math-forum-please-read-this-first-77764.html
Gmat: everything-you-need-to-prepare-for-the-gmat-revised-77983.html


GT

1 KUDOS received
Intern
Intern
Joined: 21 Feb 2008
Posts: 43
Followers: 1

Kudos [?]: 4 [1] , given: 0

Re: Factoring...? (m02 #8) [#permalink] New post 28 Feb 2008, 20:59
1
This post received
KUDOS
The question is:


x any y are both positive integers, and:
x > y
x^2 - 1 > y^4 - 4y + x - 1

Which of the following represents all the possible values of y?

ANSWER:
Let us first simplify the inequality. Cancel out the (-1) from both sides and move the over to the left hand side:
Then factor out the from the left hand side and the on the right hand side:
When we divided both parts of the equation by , we assumed that it is greater than 0. Since at the end we are left without a variable, this means that the equation works for any value where

x(x-1) > y(y-4)
(y+1)(y+1-1) > y(y-4)
y+1 > y-4
1 > 4

Now, any of the integers greater than are part of the solution to this inequality.

The correct answer is B.
Intern
Intern
Joined: 21 Feb 2008
Posts: 43
Followers: 1

Kudos [?]: 4 [0], given: 0

Re: Factoring...? (m02 #8) [#permalink] New post 02 Mar 2008, 15:20
Anyone? :-D
Manager
Manager
Joined: 12 Feb 2008
Posts: 186
Followers: 1

Kudos [?]: 33 [0], given: 0

GMAT Tests User
Re: Factoring...? (m02 #8) [#permalink] New post 02 Mar 2008, 16:27
what is B??

just write the question the way it is statet with the answers. and you will get an answer. :lol:
Re: Factoring...? (m02 #8)   [#permalink] 02 Mar 2008, 16:27
    Similar topics Author Replies Last post
Similar
Topics:
 Popular new posts 15 Experts publish their posts in the topic m02#8 bigfernhead 15 03 Nov 2008, 16:24
Popular new posts 12 m02#24 bigfernhead 16 05 Nov 2008, 08:21
Popular new posts 7 Experts publish their posts in the topic m02 #21 jimmiejaz 23 14 Nov 2008, 13:33
Popular new posts 18 Experts publish their posts in the topic M02 #19 jackychamp 26 26 Dec 2008, 18:28
Popular new posts 1 Experts publish their posts in the topic m02 #20 ConkergMat 22 17 Jan 2009, 22:17
Display posts from previous: Sort by

Factoring...? (m02 #8)

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: VeritasPrepKarishma, Bunuel

Search for:


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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com