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

It is currently 25 Oct 2014, 08:59

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

roots of equation

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 09 Nov 2009
Posts: 20
Followers: 0

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

roots of equation [#permalink] New post 11 Nov 2009, 08:22
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (01:03) wrong based on 1 sessions
The equation y-(5/y-3)=3-(5/y-3) has:

A) an infinite number of roots, all of them real
B) exactly two roots, both nonintegral
C) exactly two roots, both integral
D) exactly one root, which is integral
E) no roots


I get 3 for a root (D), but ans is E?
VP
VP
avatar
Joined: 05 Mar 2008
Posts: 1477
Followers: 11

Kudos [?]: 201 [0], given: 31

Re: roots of equation [#permalink] New post 11 Nov 2009, 08:34
elinka wrote:
The equation y-(5/y-3)=3-(5/y-3) has:

A) an infinite number of roots, all of them real
B) exactly two roots, both nonintegral
C) exactly two roots, both integral
D) exactly one root, which is integral
E) no roots


I get 3 for a root (D), but ans is E?


3 can't be a root because if you substitute 3 for y you get undefined because the denominator is (y-3)
Manager
Manager
User avatar
Joined: 23 Jun 2009
Posts: 155
Followers: 1

Kudos [?]: 8 [0], given: 9

Re: roots of equation [#permalink] New post 11 Nov 2009, 14:46
lagomez wrote:
elinka wrote:
The equation y-(5/y-3)=3-(5/y-3) has:

A) an infinite number of roots, all of them real
B) exactly two roots, both nonintegral
C) exactly two roots, both integral
D) exactly one root, which is integral
E) no roots


I get 3 for a root (D), but ans is E?


3 can't be a root because if you substitute 3 for y you get undefined because the denominator is (y-3)


Yes that is precisely why the equation doesn't have any roots. Hence, answer is
"E"
Manager
Manager
avatar
Joined: 10 Sep 2009
Posts: 119
Followers: 2

Kudos [?]: 18 [0], given: 10

Re: roots of equation [#permalink] New post 12 Nov 2009, 02:18
Could someone confirm OA please?
Re: roots of equation   [#permalink] 12 Nov 2009, 02:18
    Similar topics Author Replies Last post
Similar
Topics:
2 Experts publish their posts in the topic Which is larger, the sum of the roots of equation A or the dreambeliever 7 30 Jul 2011, 14:05
2 5 roots in one equation ghentu 4 14 Jan 2010, 04:31
43 Experts publish their posts in the topic What is the sum of all roots of the equation tejal777 26 29 Oct 2009, 01:30
ps:How many roots does equation have? pmal04 3 21 Jun 2009, 13:33
Which of the following equations has a root in common with john2005 4 15 Apr 2006, 19:16
Display posts from previous: Sort by

roots of equation

  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®.