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

Redeem

GMAT Prep DS question need help

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 418
Joined: Wed Jun 11, 2008 5:29 am
Thanked: 65 times

by bluementor » Thu Apr 30, 2009 12:19 am
x < 0

so, -x must be positive. And since |x| is also positive:

-x|x| = x^2

The "&#8730;" symbol must only return a positive value. For example, &#8730;25 = 5 only, and not -5. Similarly:

&#8730;(x^2) = -x (positive value, since x is negative). Choose A.

hth.

-BM-
Top
Post new topic Post Reply
• Page 1 of 1