Last visit was: 09 May 2026, 12:02 It is currently 09 May 2026, 12:02
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
555-605 (Medium)|   Algebra|      
User avatar
Mahimab
User avatar
Joined: 16 Dec 2018
Last visit: 19 Apr 2022
Posts: 10
Own Kudos:
10
Given Kudos: 23
Posts: 10
Kudos: 10
Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3 16 Dec 2018, 08:00
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

25% (medium)

Question Stats:

70% (00:53) correct 30% (01:12) wrong based on 76 sessions

History

Date
Time
Result
Not Attempted Yet
Is x equal to 1?

(1) (3x – 2) + (3x + 2) = 6
(2) x^2 + 2x = 3
ShowHide Answer
Official Answer
A
User avatar
doomedcat
User avatar
Joined: 24 Jun 2013
Last visit: 28 Nov 2021
Posts: 113
Own Kudos:
405
Given Kudos: 124
Location: India
Schools: ISB '20 GMBA '20
GMAT 1: 680 Q47 V36
Schools: ISB '20 GMBA '20
GMAT 1: 680 Q47 V36
Posts: 113
Kudos: 405
Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3 16 Dec 2018, 08:24
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Mahimab
Is x equal to 1?

(1) (3x – 2) + (3x + 2) = 6
(2) x^2 + 2x = 3
Show more

1) (3x – 2) + (3x + 2) = 6 ; solving for x we have x = \(\frac{5}{6}\) thus x is surely not equal to 1 ; suff
2) x^2 + 2x = 3; factorizing x can be -3 or 1 ; not suff

A
User avatar
Mahimab
User avatar
Joined: 16 Dec 2018
Last visit: 19 Apr 2022
Posts: 10
Own Kudos:
10
Given Kudos: 23
Posts: 10
Kudos: 10
Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3 16 Dec 2018, 09:25
Kudos
Add Kudos
Bookmarks
Bookmark this Post
doomedcat
Mahimab
Is x equal to 1?

(1) (3x – 2) + (3x + 2) = 6
(2) x^2 + 2x = 3

1) (3x – 2) + (3x + 2) = 6 ; solving for x we have x = \(\frac{5}{6}\) thus x is surely not equal to 1 ; suff
2) x^2 + 2x = 3; factorizing x can be -3 or 1 ; not suff

A
Show more
Solving the first statement gives x=1, not x=5/6.
User avatar
ksrutisagar
User avatar
Joined: 07 Nov 2016
Last visit: 03 Dec 2021
Posts: 39
Own Kudos:
65
Given Kudos: 12
GMAT 1: 760 Q51 V42
Expert
Expert reply
GMAT 1: 760 Q51 V42
Posts: 39
Kudos: 65
Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3 16 Dec 2018, 22:14
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Is x = 1 ?

St 1 : (3x-2) + (3x+2) = 6

Simplifying, 6x = 6
x = 1

Sufficient

St 2 ; x^2 + 2x = 3

Instead of solving a quadratic equation after taking 3 to L.H.S

We can express the equation as x(x+2) = 1 * 3
By inspection x = 1 or x = -3
Not Sufficient

Choice A
User avatar
Princ
User avatar
Joined: 22 Feb 2018
Last visit: 04 May 2025
Posts: 351
Own Kudos:
926
Given Kudos: 34
Posts: 351
Kudos: 926
Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3 16 Dec 2018, 22:44
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Mahimab
Is x equal to 1?

(1) (3x – 2) + (3x + 2) = 6
(2) x^2 + 2x = 3
Show more

OA:A

Is x equal to 1?

(1) \((3x – 2) + (3x + 2) = 6\)

Solving \(6x=6\); \(x=1\)

there is a definite answer to Is x equal to 1?,that is yes.

Statement 1 alone is sufficient.

(2) \(x^2 + 2x = 3\)

\(x^2 + 3x-1x-3 = 0\)

\(x(x+3)-1(x+3)=0\)

\((x-1)(x+3)=0\)

\(x=1\) or \(-3\)

there is no definite answer to Is x equal to 1?, x can be \(-3\) or \(1\).

Statement 2 alone is insufficient.
Moderators:
Bunuel
Math Expert
110219 posts
kingbucky
498 posts
Gmat860sanskar
241 posts