Last visit was: 18 Jul 2025, 16:12 It is currently 18 Jul 2025, 16:12
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.
Close
Request Expert Reply
Confirm Cancel
User avatar
broall
User avatar
Retired Moderator
Joined: 10 Oct 2016
Last visit: 07 Apr 2021
Posts: 1,138
Own Kudos:
6,955
 [34]
Given Kudos: 65
Status:Long way to go!
Location: Viet Nam
Posts: 1,138
Kudos: 6,955
 [34]
8
Kudos
Add Kudos
26
Bookmarks
Bookmark this Post
avatar
shwetachauhan
Joined: 17 May 2017
Last visit: 19 May 2017
Posts: 17
Own Kudos:
Given Kudos: 67
GMAT 1: 690 Q50 V33
WE:Analyst (Advertising and PR)
GMAT 1: 690 Q50 V33
Posts: 17
Kudos: 52
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
broall
User avatar
Retired Moderator
Joined: 10 Oct 2016
Last visit: 07 Apr 2021
Posts: 1,138
Own Kudos:
6,955
 [1]
Given Kudos: 65
Status:Long way to go!
Location: Viet Nam
Posts: 1,138
Kudos: 6,955
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
Mo2men
Joined: 26 Mar 2013
Last visit: 09 May 2023
Posts: 2,443
Own Kudos:
Given Kudos: 641
Concentration: Operations, Strategy
Schools: Erasmus (II)
Products:
Schools: Erasmus (II)
Posts: 2,443
Kudos: 1,438
Kudos
Add Kudos
Bookmarks
Bookmark this Post
nguyendinhtuong


Example 9. (Bunuel's questions) https://gmatclub.com/forum/inequality-an ... ml#p653783
\(|x+2|=|y+2|\) what is the value of \(x+y\)?
(1) \(xy<0\)
(2) \(x>2 \: y<2\)

Solve:
\(|x+2|=|y+2| \iff (x+2)^2=(y+2)^2 \iff x^2+4x+4=y^2+4y+4\) \(\iff x^2 +4x - y^2-4y=0 \iff (x-y)(x+y-4)=0\)
If \(x \neq y \implies x+y=4\), so we simply consider \(x=y\) or not.

(1) Insufficient. No thing indicates that \(x=y\) or not.
(2) Clearly \(x \neq y \implies x+y=4\). Sufficient.
The answer is B.

The answer posted by Bunuel is D niot B
User avatar
broall
User avatar
Retired Moderator
Joined: 10 Oct 2016
Last visit: 07 Apr 2021
Posts: 1,138
Own Kudos:
Given Kudos: 65
Status:Long way to go!
Location: Viet Nam
Posts: 1,138
Kudos: 6,955
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Mo2men
nguyendinhtuong


Example 9. (Bunuel's questions) https://gmatclub.com/forum/inequality-an ... ml#p653783
\(|x+2|=|y+2|\) what is the value of \(x+y\)?
(1) \(xy<0\)
(2) \(x>2 \: y<2\)

Solve:
\(|x+2|=|y+2| \iff (x+2)^2=(y+2)^2 \iff x^2+4x+4=y^2+4y+4\) \(\iff x^2 +4x - y^2-4y=0 \iff (x-y)(x+y-4)=0\)
If \(x \neq y \implies x+y=4\), so we simply consider \(x=y\) or not.

(1) Insufficient. No thing indicates that \(x=y\) or not.
(2) Clearly \(x \neq y \implies x+y=4\). Sufficient.
The answer is B.

The answer posted by Bunuel is D niot B
Oh, my carelessness :-D Thank you, I've edited my post :-D
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 37,455
Own Kudos:
Posts: 37,455
Kudos: 1,013
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Moderator:
Math Expert
102619 posts