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

It is currently 20 Oct 2019, 02:44

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

If x = -1, then -(x^4 + x^3 + x^2 + x) =

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58443
If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 03 Feb 2014, 01:23
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

96% (00:31) correct 4% (00:44) wrong based on 679 sessions

HideShow timer Statistics

The Official Guide For GMAT® Quantitative Review, 2ND Edition

If x = -1, then -(x^4 + x^3 + x^2 + x) =

(A) -10
(B) - 4
(C) 0
(D) 4
(E) 10

Problem Solving
Question: 74
Category: Arithmetic Operations on rational numbers
Page: 71
Difficulty: 550


GMAT Club is introducing a new project: The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions Project

Each week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.

We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.

Thank you!

_________________
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58443
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 03 Feb 2014, 01:24
Intern
Intern
avatar
Joined: 30 Jan 2014
Posts: 17
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 03 Feb 2014, 02:47
1
(c) a ???
Maybe you meant 0?
_________________
Please +1 KUDO if my post helps. Thank you.
Intern
Intern
avatar
Status: FTW
Joined: 01 Apr 2012
Posts: 8
Location: India
Concentration: International Business, Leadership
GMAT Date: 09-27-2014
GPA: 3.5
WE: Consulting (Venture Capital)
GMAT ToolKit User
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 03 Feb 2014, 09:09
1
-[(-1)^4 + (-1)^3 +(-1)^2 +(-1)^1] = (1-1+1-1) = 0
Is (C) that answer?
Manager
Manager
avatar
Joined: 20 Dec 2013
Posts: 224
Location: India
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 03 Feb 2014, 11:05
1
Ans should be '0' but it's not in the options.

Any -ve raised to even power will be +ve
Any -ve raised to odd power will remain -ve.

And '1' raised to any power=1 only.
Therefore, the question becomes -(1-1+1-1)=0
Manager
Manager
User avatar
Status: GMATting
Joined: 21 Mar 2011
Posts: 105
Concentration: Strategy, Technology
GMAT 1: 590 Q45 V27
GMAT ToolKit User
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 04 Feb 2014, 02:14
1
I think there seems to be a typo error in the answer choices: 0 should be present in option C instead of a.

I am getting 0 as the answer.
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58443
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 04 Feb 2014, 02:19
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58443
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 08 Feb 2014, 03:16
SVP
SVP
User avatar
P
Joined: 03 Jun 2019
Posts: 1732
Location: India
Premium Member Reviews Badge CAT Tests
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =  [#permalink]

Show Tags

New post 15 Sep 2019, 03:13
Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

If x = -1, then -(x^4 + x^3 + x^2 + x) =

(A) -10
(B) - 4
(C) 0
(D) 4
(E) 10

Problem Solving
Question: 74
Category: Arithmetic Operations on rational numbers
Page: 71
Difficulty: 550


GMAT Club is introducing a new project: The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions Project

Each week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.

We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.

Thank you!


Given: x = -1

Asked: -(x^4 + x^3 + x^2 + x) = ?

-(x^4 + x^3 + x^2 + x) = - (1-1+1-1) = 0

IMO C
_________________
"Success is not final; failure is not fatal: It is the courage to continue that counts."

Please provide kudos if you like my post. Kudos encourage active discussions.

My GMAT Resources: -

Efficient Learning
All you need to know about GMAT quant

Tele: +91-11-40396815
Mobile : +91-9910661622
E-mail : kinshook.chaturvedi@gmail.com
GMAT Club Bot
Re: If x = -1, then -(x^4 + x^3 + x^2 + x) =   [#permalink] 15 Sep 2019, 03:13
Display posts from previous: Sort by

If x = -1, then -(x^4 + x^3 + x^2 + x) =

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





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