GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 19 Oct 2019, 11:31 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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.  Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

Hide Tags

Intern  Joined: 16 Dec 2018
Posts: 6
Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3  [#permalink]

Show Tags 00:00

Difficulty:   25% (medium)

Question Stats: 68% (00:57) correct 32% (00:56) wrong based on 61 sessions

HideShow timer Statistics

Is x equal to 1?

(1) (3x – 2) + (3x + 2) = 6
(2) x^2 + 2x = 3
Manager  G
Joined: 24 Jun 2013
Posts: 144
Location: India
Schools: ISB '20, GMBA '20
Re: Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3  [#permalink]

Show Tags

Mahimab wrote:
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
_________________
If this post helped you learn something pls give kudos
Intern  Joined: 16 Dec 2018
Posts: 6
Re: Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3  [#permalink]

Show Tags

doomedcat wrote:
Mahimab wrote:
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

Solving the first statement gives x=1, not x=5/6.
GMAT Tutor B
Joined: 07 Nov 2016
Posts: 56
GMAT 1: 760 Q51 V42 Re: Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3  [#permalink]

Show Tags

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
_________________
Senior Manager  V
Joined: 22 Feb 2018
Posts: 420
Re: Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3  [#permalink]

Show Tags

Mahimab wrote:
Is x equal to 1?

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

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.
_________________
Good, good Let the kudos flow through you Re: Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3   [#permalink] 16 Dec 2018, 22:44
Display posts from previous: Sort by

Is x equal to 1? (1) (3x – 2) + (3x + 2) = 6 (2) x^2 + 2x = 3

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne  