4GMAT.com - GMAT PREP - Practice Tests
Search | Memberlist | Profile | Log in to check your private messages | Register | Log in
GMAT Classes
Math Books
GMAT eBooks
Practice Tests
Buy
Questions
B Schools
About Us

Algebra

 
Post new topic   Reply to topic    4GMAT - Online GMAT Preparation Forum Index -> GMAT Problem Solving
Author Message
grkmurthy
Senior Consultant


Joined: 14 Oct 2007
Posts: 37
PostPosted: Wed Nov 07, 2007 12:34 pm    Post subject: Algebra Reply with quote
2 is one solution of the equation x²+3x+k=7 where k is a constant. What is the other solution?

(1) 5
(2) –3
(3) 4
(4) –5
(5) 3
Back to top
sid
Associate


Joined: 06 Nov 2007
Posts: 8
PostPosted: Mon Nov 12, 2007 9:43 am    Post subject: Reply with quote
D.

If 2 is one of the solutions, then when x = 2, the equation will be valid.

2^2 + 3*2 + k = 7 or k = -3.

The quadratic equation will be x^2 + 3x - 10 = 0. factors will be -5 and +2.
Back to top
Display posts from previous:   
Post new topic   Reply to topic    4GMAT - Online GMAT Preparation Forum Index -> GMAT Problem Solving All times are GMT + 5.5 Hours
Page 1 of 1

 


GMAT Math eBooks   |   GMAT Class @ Chennai   |   GMAT Practice Questions


GMAT™ and GMAC™ are registered trademarks of the Graduate Management Admission Council™. The Graduate Management Admission Council™ does not endorse, nor is it affiliated in any way with the owner or any content of this web site.

Powered by phpBB © 2001, 2005 phpBB Group