Last visit was: 18 Nov 2025, 22:34 It is currently 18 Nov 2025, 22:34
Home
GMAT
Messages
Tests
Schools
Events
Rewards
Chat
My Profile
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
Sub 505 Level|   Algebra|                        
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 18 Nov 2025
Posts: 105,356
Own Kudos:
778,104
 [10]
Given Kudos: 99,966
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 105,356
Kudos: 778,104
 [10]
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ Updated on: 06 Sep 2018, 11:39
Originally posted by Bunuel on 23 Jun 2016, 11:44.
Last edited by carcass on 06 Sep 2018, 11:39, edited 1 time in total.
Edited by Carcass
Kudos
Add Kudos
10
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

91% (00:42) correct 9% (01:00) wrong based on 1561 sessions

History

Date
Time
Result
Not Attempted Yet
If \(x = \frac{-5}{8}\) and \(y = \frac{-1}{2}\),what is the value of the expression \(-2x - y^2\)?

A. \(-\frac{3}{2}\)

B. ‒1

C. 1

D. \(\frac{3}{2}\)

E. \(\frac{7}{4}\)
ShowHide Answer
Official Answer
C
Most Helpful Reply
User avatar
sashiim20
User avatar
Joined: 04 Dec 2015
Last visit: 05 Jun 2024
Posts: 609
Own Kudos:
1,886
 [5]
Given Kudos: 276
Location: India
Concentration: Technology, Strategy
Schools: ISB '19 IIMB IIMA XLRI HEC Sept19 intake Rotman '21 NUS '21 NTU '20 Trinity MBA '20 Bocconi '21 Smurfit "21
WE:Information Technology (Consulting)
Schools: ISB '19 IIMB IIMA XLRI HEC Sept19 intake Rotman '21 NUS '21 NTU '20 Trinity MBA '20 Bocconi '21 Smurfit "21
Posts: 609
Kudos: 1,886
 [5]
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 24 Jun 2016, 03:02
5
Kudos
Add Kudos
Bookmarks
Bookmark this Post
x = -5/8
y = -1/2
Value of the expression -2x - y^2 = -2 (-5/8) - (-1/2)^2
= 10/8 - (1/4)
= 5/4 - 1/4
= 5-1 / 4
= 4/4 = 1 (C) .. Answer is C...

Please, consider giving kudos if you find my answer helpful in any way :) :good :thumbup:
General Discussion
User avatar
Abhishek009
User avatar
Board of Directors
Joined: 11 Jun 2011
Last visit: 18 Jul 2025
Posts: 5,937
Own Kudos:
5,327
 [1]
Given Kudos: 463
Status:QA & VA Forum Moderator
Location: India
GPA: 3.5
WE:Business Development (Commercial Banking)
Posts: 5,937
Kudos: 5,327
 [1]
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 23 Jun 2016, 11:55
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
AbdurRakib
If x=\(\frac{-5}{8}\) and y=\(\frac{-1}{2}\),what is the value of the expression -2x-\(y^2\)?
A. \(\frac{-3}{2}\)
B. ‒1
C. 1
D. \(\frac{3}{2}\)

E. \(\frac{7}{4}\)


OG Q 2017(Book Question: 19)
Show more

\(-2x\) \(-\) \(y^2\)

= \(-2(\frac{-5}{8})\) \(-\) \((-1/2)^2\)

= \(\frac{5}{4}\) \(-\) \(\frac{1}{4}\)

= 1

Answer will be (C)
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 18 Nov 2025
Posts: 105,356
Own Kudos:
778,104
Given Kudos: 99,966
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 105,356
Kudos: 778,104
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 03 Jul 2016, 11:42
Kudos
Add Kudos
Bookmarks
Bookmark this Post

7. Algebra



For more check Ultimate GMAT Quantitative Megathread

Hope it helps.
User avatar
rohitrawat9990
User avatar
Joined: 20 Jan 2016
Last visit: 11 Apr 2017
Posts: 32
Own Kudos:
46
Given Kudos: 5
GMAT 1: 600 Q47 V26
GMAT 1: 600 Q47 V26
Posts: 32
Kudos: 46
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 03 Jul 2016, 11:44
Kudos
Add Kudos
Bookmarks
Bookmark this Post
-2X- y^2
-2x-5/8 - (1/2)^2
5/4-1/4
1

C correct


Sent from my iPhone using GMAT Club Forum mobile app
avatar
xino123
avatar
Joined: 08 Oct 2015
Last visit: 09 Aug 2022
Posts: 7
Own Kudos:
8
Given Kudos: 131
Location: United States
Posts: 7
Kudos: 8
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 05 Jul 2016, 03:13
Kudos
Add Kudos
Bookmarks
Bookmark this Post
x = -5/8 and y = -1/2

==> -2(-5/8) - (1/2)^2 = 5/4 - 1/4 = 1

Ans: C :lol:
User avatar
diegocml
User avatar
Joined: 22 Apr 2016
Last visit: 22 Jun 2018
Posts: 122
Own Kudos:
126
Given Kudos: 392
Status:On a 600-long battle
Location: Hungary
Concentration: Accounting, Leadership
Schools: Erasmus '19
GMAT 1: 410 Q18 V27
GMAT 2: 490 Q35 V23
Schools: Erasmus '19
GMAT 2: 490 Q35 V23
Posts: 122
Kudos: 126
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 12 Apr 2017, 23:12
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^2?

A) -3/2
B) -1
C) 1
D) 3/2
E) 7/4
Show more


Replacing x with \(x=-\cfrac { 5 }{ 8 }\) and y with\(y=-\cfrac { 1 }{ 2 }\) in the expression given:

\(-2x-{ y }^{ 2 }=\\ -2\left( -\cfrac { 5 }{ 8 } \right) -{ \left( -\cfrac { 1 }{ 2 } \right) }^{ 2 }=\\ \cfrac { 5 }{ 4 } -\cfrac { 1 }{ 4 } =\\ \cfrac { 4 }{ 4 } =\\ 1\)
User avatar
JeffTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 04 Mar 2011
Last visit: 05 Jan 2024
Posts: 2,977
Own Kudos:
8,387
Given Kudos: 1,646
Status:Head GMAT Instructor
Affiliations: Target Test Prep
Expert
Expert reply
Posts: 2,977
Kudos: 8,387
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 31 May 2018, 16:09
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
If x = -5/8 and y = -1/2,what is the value of the expression -2x - y^2?

A. \(-\frac{3}{2}\)

B. ‒1

C. 1

D. \(\frac{3}{2}\)

E. \(\frac{7}{4}\)
Show more

Substituting the given values into the expression, we have:

-2(-5/8) - (-1/2)^2

10/8 - 1/4 = 5/4 - 1/4 = 4/4 = 1

Answer: C
User avatar
HasnainAfxal
User avatar
Joined: 06 Sep 2018
Last visit: 12 Mar 2022
Posts: 126
Own Kudos:
65
Given Kudos: 72
Location: Pakistan
Concentration: Finance, Operations
GPA: 2.87
WE:Engineering (Other)
Products:
My Reviews
Posts: 126
Kudos: 65
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 06 Sep 2018, 09:25
Kudos
Add Kudos
Bookmarks
Bookmark this Post
\(-2(\frac{-5}{8})-(\frac{-1}{2})^2\)
\(\frac{10}{8}-\frac{1}{4}\)
\(\frac{8}{8}\)
\(1\)

Answer C
User avatar
Kinshook
User avatar
Major Poster
Joined: 03 Jun 2019
Last visit: 18 Nov 2025
Posts: 5,794
Own Kudos:
5,509
Given Kudos: 161
Location: India
Schools: HBS '26 CBS '26 Wharton '26
GMAT 1: 690 Q50 V34
WE:Engineering (Transportation)
Products:
My Reviews
Schools: HBS '26 CBS '26 Wharton '26
GMAT 1: 690 Q50 V34
Posts: 5,794
Kudos: 5,509
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ 15 Sep 2019, 05:44
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
If \(x = \frac{-5}{8}\) and \(y = \frac{-1}{2}\),what is the value of the expression \(-2x - y^2\)?

A. \(-\frac{3}{2}\)

B. ‒1

C. 1

D. \(\frac{3}{2}\)

E. \(\frac{7}{4}\)
Show more


10/8-1/4=5/4-1/4=4/4=1

IMO C

Posted from my mobile device
Moderators:
Bunuel
Math Expert
105356 posts
Krunaal
Tuck School Moderator
805 posts