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

It is currently 16 Oct 2019, 02:42

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 t = –5k, what is t² – 2t in terms of k ?

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

Hide Tags

Find Similar Topics 
Manager
Manager
User avatar
S
Joined: 17 Mar 2018
Posts: 70
Reviews Badge
If t = –5k, what is t² – 2t in terms of k ?  [#permalink]

Show Tags

New post Updated on: 10 Oct 2018, 18:57
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

91% (00:36) correct 9% (01:30) wrong based on 75 sessions

HideShow timer Statistics

If t = –5k, what is t² – 2t in terms of k ?

A) 25k² + 10k

B) 25k² – 10k

C) 5k² + 10k

D) –5k² + 10k

E) –5k² – 10k

Originally posted by taniad on 10 Oct 2018, 03:04.
Last edited by generis on 10 Oct 2018, 18:57, edited 1 time in total.
Formatted the question
Senior Manager
Senior Manager
User avatar
D
Joined: 18 Jun 2018
Posts: 263
Re: If t = –5k, what is t² – 2t in terms of k ?  [#permalink]

Show Tags

New post 10 Oct 2018, 03:07
OA:A
Given : \(t = –5k\)
\(t² – 2t = (-5k)^2-2(-5k) =25k^2+10k\)
Board of Directors
User avatar
D
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4773
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User
Re: If t = –5k, what is t² – 2t in terms of k ?  [#permalink]

Show Tags

New post 10 Oct 2018, 08:37
taniad wrote:
If \(t = –5k\), what is \(t^2 – 2t\) in terms of k ?

25k² + 10k

25k² – 10k

5k² + 10k

–5k² + 10k

–5k² – 10k


\(t^2 – 2t = (–5k)^2 -2(–5k)\)

Or, \(t^2 – 2t = 25k^2 + 10k\); Answer must be (A)
_________________
Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8069
Location: United States (CA)
Re: If t = –5k, what is t² – 2t in terms of k ?  [#permalink]

Show Tags

New post 13 Oct 2018, 18:30
taniad wrote:
If t = –5k, what is t² – 2t in terms of k ?

A) 25k² + 10k

B) 25k² – 10k

C) 5k² + 10k

D) –5k² + 10k

E) –5k² – 10k


Substituting,, we have:

(-5k)^2 - 2(-5k) = 25k^2 + 10k

Answer: A
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Manager
Manager
avatar
S
Joined: 24 Dec 2017
Posts: 185
Location: India
Concentration: Strategy, Real Estate
Schools: Johnson '21
Re: If t = –5k, what is t² – 2t in terms of k ?  [#permalink]

Show Tags

New post 15 Oct 2018, 03:51
We know t = -5k
t² – 2t = (-5k)² - 2(-5k) = 25k² + 10k

Answer is A
GMAT Club Bot
Re: If t = –5k, what is t² – 2t in terms of k ?   [#permalink] 15 Oct 2018, 03:51
Display posts from previous: Sort by

If t = –5k, what is t² – 2t in terms of k ?

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





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