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

It is currently 28 Jul 2015, 18:54
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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

What is the value of x? 1) x^3-x=0 2) x^2-x=0 I realize the

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 31 Jan 2005
Posts: 9
Followers: 0

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

What is the value of x? 1) x^3-x=0 2) x^2-x=0 I realize the [#permalink] New post 05 Feb 2005, 15:19
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

What is the value of x?

1) x^3-x=0
2) x^2-x=0

I realize the answer is E, but to clarify, if you have more than two answers on a value question will that ALWAYS be INSUFFICIENT?
VP
VP
User avatar
Joined: 25 Nov 2004
Posts: 1494
Followers: 6

Kudos [?]: 46 [0], given: 0

Re: DS Kaplan book-Will two values on a value question? [#permalink] New post 05 Feb 2005, 19:25
willgoldberg wrote:
What is the value of x?

1) x^3-x=0
2) x^2-x=0

I realize the answer is E, but to clarify, if you have more than two answers on a value question will that ALWAYS be INSUFFICIENT?


from i, x could be +ve and -ve. 1 and -1, both, satisfy the equation.

from ii, x is positive. x^2=x is only possible if x=1.
therefore OA is B.
VP
VP
avatar
Joined: 18 Nov 2004
Posts: 1441
Followers: 2

Kudos [?]: 23 [0], given: 0

 [#permalink] New post 05 Feb 2005, 19:41
"E".

I. x(x2-1) = 0.....x = 0 or x = 1 or -1....insuff

II x(x-1) = 0....X = 0 or X = 1....insuff


Combine....

x3 -x = x2 -x

x2(x-1) = 0


x = 0 or 1...insuff
SVP
SVP
User avatar
Joined: 03 Jan 2005
Posts: 2246
Followers: 14

Kudos [?]: 230 [0], given: 0

 [#permalink] New post 05 Feb 2005, 20:04
x could be zero too, MA.

Yes, if it is asking for a value, and we can't pin the value down to one exact value, than it would be insufficient.
Manager
Manager
avatar
Joined: 24 Jan 2005
Posts: 217
Location: Boston
Followers: 1

Kudos [?]: 5 [0], given: 0

[#permalink] New post 07 Feb 2005, 14:03
Should be E as no unique answer even after combining the two.
E   [#permalink] 07 Feb 2005, 14:03
Display posts from previous: Sort by

What is the value of x? 1) x^3-x=0 2) x^2-x=0 I realize the

  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®.