If x=3/4 and y=2/5, what is the value of sqrt(x^2 + 6x + 9) : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 23 Jan 2017, 22:42

### 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=3/4 and y=2/5, what is the value of sqrt(x^2 + 6x + 9)

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
CEO
Joined: 21 Jan 2007
Posts: 2756
Location: New York City
Followers: 11

Kudos [?]: 860 [0], given: 4

If x=3/4 and y=2/5, what is the value of sqrt(x^2 + 6x + 9) [#permalink]

### Show Tags

11 Dec 2007, 13:56
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If x=3/4 and y=2/5, what is the value of sqrt(x^2 + 6x + 9) - sqrt (y^2 -2y + 1)?

87/20
63/20
47/20
15/4
14/5
CEO
Joined: 17 Nov 2007
Posts: 3589
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Followers: 550

Kudos [?]: 3565 [0], given: 360

### Show Tags

11 Dec 2007, 14:22
B

√(x²+6x+9) - √ (y²-2y+1) = √(x+3)² - √ (y-1)²=|x+3| - |y-1| =

= |3/4+3| - |2/5-1| = 15/4 - 3/5 = (75 - 12)/20 = 63/20
11 Dec 2007, 14:22
Display posts from previous: Sort by

# If x=3/4 and y=2/5, what is the value of sqrt(x^2 + 6x + 9)

 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®.