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

It is currently 16 Apr 2014, 00:02

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^2 + 2xy + y^2? 1) x + y = 7 2) x = 2

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
Joined: 08 Sep 2005
Posts: 46
Followers: 0

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

What is the value of x^2 + 2xy + y^2? 1) x + y = 7 2) x = 2 [#permalink] New post 18 Apr 2006, 18:13
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
What is the value of x^2 + 2xy + y^2?

1) x + y = 7
2) x = 2
Senior Manager
Senior Manager
Joined: 05 Jan 2006
Posts: 386
Followers: 1

Kudos [?]: 12 [0], given: 0

GMAT Tests User
 [#permalink] New post 18 Apr 2006, 18:36
x^2 + 2xy + y^2= (x+y)^2

A) sufficient
Manager
Manager
Joined: 23 Jan 2006
Posts: 194
Followers: 1

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

GMAT Tests User
 [#permalink] New post 18 Apr 2006, 18:36
x^2 + 2xy + y^2
can be factored as (x+y)^2

1)x + y = 7 so 7^2 = 49 sufficient

2)x = 2, tells us nothing of y.
INSUFFICIENT

Ans - A
Intern
Intern
Joined: 02 Feb 2006
Posts: 12
Location: UK
Followers: 0

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

 [#permalink] New post 18 Apr 2006, 21:52
its A.

1)x + y = 7 so 7^2 = 49 sufficient

2)x = 2, so the equation becomes a quadratic with y as variable.
y^2 + 4y + 4 => (y+2)(y+2) . Since we do not know y, we cannot find out the value of this equation. Insufficient.
VP
VP
User avatar
Joined: 07 Nov 2005
Posts: 1134
Location: India
Followers: 2

Kudos [?]: 27 [0], given: 1

GMAT Tests User
 [#permalink] New post 18 Apr 2006, 22:30
Clear A for this one.
Second statement doesn't tell anything about y variable.
Senior Manager
Senior Manager
User avatar
Joined: 24 Jan 2006
Posts: 256
Followers: 1

Kudos [?]: 3 [0], given: 0

GMAT Tests User
 [#permalink] New post 19 Apr 2006, 06:36
If this is an easy questions then its A :)
Manager
Manager
Joined: 27 Mar 2006
Posts: 137
Followers: 1

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

GMAT Tests User
 [#permalink] New post 19 Apr 2006, 09:51
A :wink:
  [#permalink] 19 Apr 2006, 09:51
    Similar topics Author Replies Last post
Similar
Topics:
New posts R = 1 + 2xy + x^2y^2; what is value of xy? 1.) R = 0 2.) uphillclimb 2 14 Oct 2006, 11:53
New posts What is the value of x^2 + y^2? (1) x^2 + y^2 = 2xy +1 (2) lumone 1 28 Jan 2009, 10:57
New posts What is the value of x^2 + y^2? 1) x^2 + y^2 = 2xy + 1 2) youven 6 24 Jul 2010, 07:50
New posts What is the value of x^2 + y^2 ? (1) x^2+ y^2 = 2xy + 1 (2) dreambeliever 4 05 Jun 2011, 08:16
New posts 2 If S = y^2 + 2xy + x^2, what is the value of xy? metallicafan 4 28 Jun 2012, 08:03
Display posts from previous: Sort by

What is the value of x^2 + 2xy + y^2? 1) x + y = 7 2) x = 2

  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®.