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

It is currently 09 Dec 2018, 23:27

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
Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • Free lesson on number properties

     December 10, 2018

     December 10, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.
  • Free GMAT Algebra Webinar

     December 09, 2018

     December 09, 2018

     07:00 AM PST

     09:00 AM PST

    Attend this Free Algebra Webinar and learn how to master Inequalities and Absolute Value problems on GMAT.

If x+(1/x)=4, what is the value of x^2+(1/x)^2?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Math Revolution GMAT Instructor
User avatar
V
Joined: 16 Aug 2015
Posts: 6611
GMAT 1: 760 Q51 V42
GPA: 3.82
Premium Member
If x+(1/x)=4, what is the value of x^2+(1/x)^2?  [#permalink]

Show Tags

New post 26 Sep 2017, 00:21
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

88% (00:51) correct 13% (02:44) wrong based on 8 sessions

HideShow timer Statistics

[GMAT math practice question]

If x+(1/x)=4, what is the value of x^2+(1/x)^2?

A. 12
B. 13
C. 14
D. 15
E. 16

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.


If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________

MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only $99 for 3 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"

Intern
Intern
avatar
Joined: 14 Sep 2017
Posts: 5
Re: If x+(1/x)=4, what is the value of x^2+(1/x)^2?  [#permalink]

Show Tags

New post 26 Sep 2017, 00:53
MathRevolution wrote:
[GMAT math practice question]

If x+(1/x)=4, what is the value of x^2+(1/x)^2?

A. 12
B. 13
C. 14
D. 15
E. 16


x+(1/x)=4
=> {x + (1/x)}^2=16
=> x^2 + 2.x.(1/x)+ (1/x)^2=16
=> x^2+ 2+ (1/x)^2=16
=> x^2+ (1/x)^2=14
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 51044
Re: If x+(1/x)=4, what is the value of x^2+(1/x)^2?  [#permalink]

Show Tags

New post 26 Sep 2017, 01:01
MathRevolution wrote:
[GMAT math practice question]

If x+(1/x)=4, what is the value of x^2+(1/x)^2?

A. 12
B. 13
C. 14
D. 15
E. 16


Duplicate post: if-x-1-x-4-x2-1-x2-226125.html

TOPIC IS LOCKED AND ARCHIVED.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.


If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

GMAT Club Bot
Re: If x+(1/x)=4, what is the value of x^2+(1/x)^2? &nbs [#permalink] 26 Sep 2017, 01:01
Display posts from previous: Sort by

If x+(1/x)=4, what is the value of x^2+(1/x)^2?

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

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

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®.