BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

130-point score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

Absolute x

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pmFollowed by: 3 members
Location: INDIA
Thanked: 84 times

Re: Absolute x

by sudhir3127 » Sun Aug 24, 2008 11:43 am
crak.gmat wrote:If x < 0 , what is the value of (-x.|x|) ^ 1/2.

Ans. Should it be -x or x?
plug in...

let x =-2

(-x.|x|) ^ 1/2

[-(-2).|-2|)^1/2
4^1/2 = 2 which is -X

hope that helps...
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 78
Joined: Sun Jul 06, 2008 9:40 am
Thanked: 3 times

Re: Absolute x

by crak.gmat » Sun Aug 24, 2008 11:49 am
sudhir3127 wrote:
crak.gmat wrote:If x < 0 , what is the value of (-x.|x|) ^ 1/2.

Ans. Should it be -x or x?
plug in...

let x =-2

(-x.|x|) ^ 1/2

[-(-2).|-2|)^1/2
4^1/2 = 2 which is -X

hope that helps...

Yes it does help and that is the correct answer. But the place where I got confused was where you did the final evaluation of 4^1/2. The result could be either 2 or -2? How did you know to go with 2?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 829
Joined: Mon Jul 07, 2008 10:09 pmFollowed by: 3 members
Location: INDIA
Thanked: 84 times

Re: Absolute x

by sudhir3127 » Sun Aug 24, 2008 11:54 am
crak.gmat wrote:
sudhir3127 wrote:
crak.gmat wrote:If x < 0 , what is the value of (-x.|x|) ^ 1/2.

Ans. Should it be -x or x?
plug in...

let x =-2

(-x.|x|) ^ 1/2

[-(-2).|-2|)^1/2
4^1/2 = 2 which is -X

hope that helps...


Yes it does help and that is the correct answer. But the place where I got confused was where you did the final evaluation of 4^1/2. The result could be either 2 or -2? How did you know to go with 2?
AFAIK .... there no negative square-roots in GMAT... so its always positive...

hope that helps..
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1