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

 It is currently 19 Jun 2018, 18:57

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# x+4)^2 > 4 what is the value of x

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Manager
Joined: 16 Apr 2009
Posts: 213
Schools: Ross
x+4)^2 > 4 what is the value of x [#permalink]

### Show Tags

07 Jul 2009, 17:04
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

(x+4)^2 > 4

what is the value of x?

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

This is not a quality discussion. 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.

_________________

Keep trying no matter how hard it seems, it will get easier.

Senior Manager
Joined: 04 Jun 2008
Posts: 279
Re: Inequality [#permalink]

### Show Tags

07 Jul 2009, 19:15
for (x+4)^2 to be >4, (x+4) must either be < -2 or > 2

when x+4 < -2 ; x < -6
when x+4 > 2 ; x > -2
Manager
Joined: 28 Jan 2004
Posts: 199
Location: India
Re: Inequality [#permalink]

### Show Tags

08 Jul 2009, 21:26
[m]x^2[/m]
As per instructions given to write the formula in a more readable format I tried the following.

Step 1 - I wrote X^2.
Step 2 - I highlighted X^2 and then clicked m given on top. This made it appear as [m]x^2[/m].
Step 3 - I submitted the post.

Result -
As you can see that it did not showed it as a mathematical symbol. Can someone help please. My explanation could have been much simpler had I been able to display the mathematical formula.

Mods please help me and le me know what I missed.
Manager
Joined: 28 Jan 2004
Posts: 199
Location: India
Re: Inequality [#permalink]

### Show Tags

08 Jul 2009, 21:48
(x+4)^2 > 4

Make it a equality first.
(x+4)^2 = 4
Solve it we get
(X+2)(X+6) = 0
This means
X = -2 or X = -6.
Now this -2 and -6 are our check points. what we have done is that we have broken the number line into 3 intervals.
(-infiniy,-6) (-6,-2) and (-2,+infinity). we just need to check that within which interval this expression is positive (why positive ? because the initia inequality asked us to find > 4. Had the initial inequaiy asked us to find <4 then we would have find out within which of these 3 interval we have a -ve value).
Now make a grid as follows or use the check point method. I do not recommend check point method so lets go with the grid.

refer my attachment as I do not know how to put a picture here.
Attachments

Inequality.doc [27.5 KiB]
Downloaded 101 times

 To download please login or register as a user

Current Student
Joined: 03 Aug 2006
Posts: 112
Location: Next to Google
Schools: Haas School of Business
Re: Inequality [#permalink]

### Show Tags

08 Jul 2009, 22:17
mdfrahim wrote:
$$x^2$$
As per instructions given to write the formula in a more readable format I tried the following.

Step 1 - I wrote X^2.
Step 2 - I highlighted X^2 and then clicked m given on top. This made it appear as $$x^2$$.
Step 3 - I submitted the post.

Result -
As you can see that it did not showed it as a mathematical symbol. Can someone help please. My explanation could have been much simpler had I been able to display the mathematical formula.

Mods please help me and le me know what I missed.

I noticed that you had 'Disable BBCode' checked. Uncheck it and it should work.
Manager
Joined: 28 Jan 2004
Posts: 199
Location: India
Re: Inequality [#permalink]

### Show Tags

08 Jul 2009, 23:36
Can you please tell me how to do this ? I have no idea what a BBCode is !!!!
Current Student
Joined: 03 Aug 2006
Posts: 112
Location: Next to Google
Schools: Haas School of Business
Re: Inequality [#permalink]

### Show Tags

09 Jul 2009, 00:48
mdfrahim wrote:
Can you please tell me how to do this ? I have no idea what a BBCode is !!!!

I have attached a screenshot and if you look under options you will see that you have that flag checked.

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

This is not a quality discussion. 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.

Attachments

img1.jpg [ 97.89 KiB | Viewed 612 times ]

Re: Inequality   [#permalink] 09 Jul 2009, 00:48
Display posts from previous: Sort by

# x+4)^2 > 4 what is the value of x

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.