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

 It is currently 04 May 2015, 04:55

### 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

# Factoring...? (m02 #8)

Author Message
TAGS:
Intern
Joined: 21 Feb 2008
Posts: 43
Followers: 1

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

Factoring...? (m02 #8) [#permalink]  27 Feb 2008, 21:50
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
Joined: 05 Jan 2008
Posts: 707
Followers: 3

Kudos [?]: 146 [0], given: 0

Re: Factoring...? (m02 #8) [#permalink]  27 Feb 2008, 23:59
looks like X has been substituted by y+1
_________________

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

SVP
Joined: 29 Aug 2007
Posts: 2497
Followers: 57

Kudos [?]: 556 [0], given: 19

Re: Factoring...? (m02 #8) [#permalink]  28 Feb 2008, 01:18
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.
_________________
Intern
Joined: 21 Feb 2008
Posts: 43
Followers: 1

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

Re: Factoring...? (m02 #8) [#permalink]  28 Feb 2008, 19:59
1
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?

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.

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

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

Re: Factoring...? (m02 #8) [#permalink]  02 Mar 2008, 14:20
Anyone?
Manager
Joined: 12 Feb 2008
Posts: 181
Followers: 1

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

Re: Factoring...? (m02 #8) [#permalink]  02 Mar 2008, 15:27
what is B??

just write the question the way it is statet with the answers. and you will get an answer.
Re: Factoring...? (m02 #8)   [#permalink] 02 Mar 2008, 15:27
Similar topics Replies Last post
Similar
Topics:
5 m02 #20 26 17 Jan 2009, 21:17
35 M02 #19 26 26 Dec 2008, 17:28
15 m02 #21 28 14 Nov 2008, 12:33
40 m02#24 14 05 Nov 2008, 07:21
21 m02#8 16 03 Nov 2008, 15:24
Display posts from previous: Sort by

# Factoring...? (m02 #8)

 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®.