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# Sq. Root

Author Message
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Director
Joined: 12 Oct 2008
Posts: 557
Followers: 2

Kudos [?]: 139 [0], given: 2

Sq. Root [#permalink]  28 Oct 2009, 15:12
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
If x < 0, then √(-x│x│) is

A. -x
B. -1
C. 1
D. x
E. √x
[Reveal] Spoiler:
OA D IMO A
SVP
Joined: 29 Aug 2007
Posts: 2496
Followers: 58

Kudos [?]: 563 [1] , given: 19

Re: Sq. Root [#permalink]  28 Oct 2009, 17:31
1
KUDOS
If x < 0, then √(-x│x│) is

A. -x
B. -1
C. 1
D. x
E. √x
[Reveal] Spoiler:
OA D IMO A

Should be A not D.

Suppose x = -5
= √(-x│x│)
= √(-(-5)│-5│)
= √(5x5)
= √(25)
= 5

5 = -x = -(-5)
Thats A.
_________________
Manager
Joined: 15 Sep 2009
Posts: 138
Followers: 1

Kudos [?]: 18 [0], given: 2

Re: Sq. Root [#permalink]  29 Oct 2009, 03:41
I will choose option A
Re: Sq. Root   [#permalink] 29 Oct 2009, 03:41
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