If x != 0, then sqrt(x^2)/x = i) -1 ii) 0 iii) 1 iv) x v) : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 16 Jan 2017, 05:51

### 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

# If x != 0, then sqrt(x^2)/x = i) -1 ii) 0 iii) 1 iv) x v)

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Manager
Joined: 04 Dec 2005
Posts: 80
Followers: 1

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

If x != 0, then sqrt(x^2)/x = i) -1 ii) 0 iii) 1 iv) x v) [#permalink]

### Show Tags

07 Oct 2006, 20:20
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If x != 0, then sqrt(x^2)/x =

i) -1
ii) 0
iii) 1
iv) x
v) |x|/x

I selected iii) thinking that in GMAT world sqrt(x) is always positive. Please let me know the answer
Manager
Joined: 01 Oct 2006
Posts: 242
Followers: 1

Kudos [?]: 11 [0], given: 0

Re: GMAT Prep question [#permalink]

### Show Tags

07 Oct 2006, 21:54
sqrt (x^2)/x = +x/x or -x/x. Therefore answer should be v
Senior Manager
Joined: 30 Aug 2006
Posts: 374
Followers: 3

Kudos [?]: 65 [0], given: 0

### Show Tags

08 Oct 2006, 13:10
V) |x| / x

you destroy the sign by taking the square root of a square, therefore it is the same as saying |x|,

e.g. x^2 = 4 x could be -2 or 2
sqrt 4 = 2 we have lost the -2
Director
Joined: 23 Jun 2005
Posts: 847
GMAT 1: 740 Q48 V42
Followers: 5

Kudos [?]: 69 [0], given: 1

Re: GMAT Prep question [#permalink]

### Show Tags

08 Oct 2006, 19:09
withme wrote:
If x != 0, then sqrt(x^2)/x =

i) -1
ii) 0
iii) 1
iv) x
v) |x|/x

I selected iii) thinking that in GMAT world sqrt(x) is always positive. Please let me know the answer

C)1

Seems straight forward, unless I'm missing something very basic.
Director
Joined: 23 Jun 2005
Posts: 847
GMAT 1: 740 Q48 V42
Followers: 5

Kudos [?]: 69 [0], given: 1

### Show Tags

08 Oct 2006, 19:11
Guys,
Since the question specifically mentions sqrt(x^2), the root can be only x, right? For example, sqrt (4^2) can only be 4 not, +/-4.
08 Oct 2006, 19:11
Display posts from previous: Sort by

# If x != 0, then sqrt(x^2)/x = i) -1 ii) 0 iii) 1 iv) x v)

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.