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

It is currently 20 May 2013, 23:38
Customize  |  Hide

Search
Register
New posts
Unanswered

What is the value of sqrt(x^2 - 6x + 9) +sqrt(2-x) + (x- 3),

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Director
Director
User avatar
Joined: 14 Jan 2007
Posts: 787
Followers: 1

Kudos [?]: 32 [0], given: 0

GMAT Tests User
What is the value of sqrt(x^2 - 6x + 9) +sqrt(2-x) + (x- 3), [#permalink] New post 29 May 2007, 10:44
00:00

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
What is the value of sqrt(x^2 - 6x + 9) +sqrt(2-x) + (x- 3), assuming all terms are well defined.

1. sqrt(2-x)
2. 2x-6 + sqrt(2-x)
3. sqrt(2-x) + x-3
4. 2x-6 + sqrt(x-2)
5. x +sqrt(2-x)

Last edited by vshaunak@gmail.com on 29 May 2007, 10:56, edited 1 time in total.
Director
Director
User avatar
Joined: 14 Jan 2007
Posts: 787
Followers: 1

Kudos [?]: 32 [0], given: 0

GMAT Tests User
 [#permalink] New post 29 May 2007, 10:58
Hayabusa wrote:
is it 4?


Please do it again as I have edited the choice 4. I think you mean choice 2?
Director
Director
User avatar
Joined: 30 Nov 2006
Posts: 598
Location: Kuwait
Followers: 8

Kudos [?]: 115 [0], given: 0

GMAT Tests User
 [#permalink] New post 29 May 2007, 11:37
sqrt{x^2 -6x + 9} = sqrt{(x-3)^2} = x-3
so the total value is (x-3) + (x-3) + sqrt{2-x} = 2x-6 + sqrt{2-x}

Answer: B or 2
Director
Director
User avatar
Joined: 14 Jan 2007
Posts: 787
Followers: 1

Kudos [?]: 32 [0], given: 0

GMAT Tests User
 [#permalink] New post 06 Jun 2007, 15:59
OA is 1.

as 2-x should be > 0
x < 2

sqrt(x^2-6x+9) = -(x-3) as x-3 < 0
so the value of expression is sqrt(2-x)
CEO
CEO
User avatar
Joined: 17 May 2007
Posts: 2998
Followers: 48

Kudos [?]: 390 [0], given: 210

GMAT Tests User
 [#permalink] New post 06 Jun 2007, 17:02
Hi vishaunak

I follow ur logic where x < 2 and that x-3 by that logic is negative. But how does that lead to answer choice A ? Please clarify ?
Director
Director
User avatar
Joined: 14 Jan 2007
Posts: 787
Followers: 1

Kudos [?]: 32 [0], given: 0

GMAT Tests User
 [#permalink] New post 07 Jun 2007, 12:16
bsd_lover wrote:
Hi vishaunak

I follow ur logic where x < 2 and that x-3 by that logic is negative. But how does that lead to answer choice A ? Please clarify ?


expression = sqrt(x^2 - 6x + 9) +sqrt(2-x) + (x- 3)
= -(x-3) + sqrt(2-x) + (x-3)
= sqrt(2-x)
I think it should be clear now.
  [#permalink] 07 Jun 2007, 12:16
    Similar topics Author Replies Last post
Similar
Topics:
 Popular new posts If x=3/4 and y=1/5, what is the value of sqrt(x^2 + 6x + 9) ajay_gmat 13 24 Jul 2007, 22:46
Popular new posts If x=3/4 and y=1/5, what is the value of sqrt(x^2 + 6x + 9) ajay_gmat 10 25 Jul 2007, 04:18
New posts EXPERTS_POSTS_IN_THIS_TOPIC If x=3/4 and y=2/5, what is the value of sqrt(x^2 + 6x + 9) bmwhype2 1 11 Dec 2007, 14:56
New posts 1 what is sqrt(x^2-6x+9) + sqrt(2-x) + (x-3) if each term in bmwhype2 4 01 Feb 2008, 06:31
Popular new posts 1 What is \sqrt{x^2 - 6x + 9} + \sqrt{2 - x} + x - 3 if each aaron22197 10 14 Jul 2008, 22:48
Display posts from previous: Sort by

What is the value of sqrt(x^2 - 6x + 9) +sqrt(2-x) + (x- 3),

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma, IanStewart

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