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

 It is currently 27 Apr 2015, 09:17

### 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

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

Author Message
TAGS:
Intern
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]  05 Feb 2005, 15:19
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
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
Joined: 25 Nov 2004
Posts: 1495
Followers: 6

Kudos [?]: 38 [0], given: 0

Re: DS Kaplan book-Will two values on a value question? [#permalink]  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
Joined: 18 Nov 2004
Posts: 1442
Followers: 2

Kudos [?]: 20 [0], given: 0

"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
Joined: 03 Jan 2005
Posts: 2250
Followers: 13

Kudos [?]: 216 [0], given: 0

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
Joined: 24 Jan 2005
Posts: 217
Location: Boston
Followers: 1

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

Should be E as no unique answer even after combining the two.
E   [#permalink] 07 Feb 2005, 14:03
Similar topics Replies Last post
Similar
Topics:
1 What is the value of x^2 + 1/x^2 ? 6 24 Mar 2015, 03:32
if x<0, what is the value of ^1/4+(-x*|x|)^1/2 i guess 5 18 Jul 2006, 13:40
What is the value of X^2 -Y^2? 1. x+y=2x 2. x+y=0 I 4 17 Jul 2006, 20:59
What is the value of x? (1) (x + y) = x - y (2) x + y = 2 I 3 25 Apr 2006, 16:21
If xy=1, what is the value of 2(x+y)^2/2(x-y)^2 I am sure it 3 21 Jan 2006, 10:41
Display posts from previous: Sort by