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# If x > 0, what is the value of x ?

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Math Expert
Joined: 02 Sep 2009
Posts: 33061
Followers: 5772

Kudos [?]: 70776 [0], given: 9857

If x > 0, what is the value of x ? [#permalink]

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13 Dec 2015, 05:19
Expert's post
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Difficulty:

35% (medium)

Question Stats:

78% (01:19) correct 22% (00:08) wrong based on 28 sessions

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If x > 0, what is the value of x ?

(1) x > 5
(2) 40 – x^2 = 4
[Reveal] Spoiler: OA

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Joined: 17 Aug 2015
Posts: 96
Location: India
Concentration: Strategy, General Management
GMAT 1: 750 Q49 V42
GPA: 4
WE: Information Technology (Investment Banking)
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Kudos [?]: 29 [0], given: 336

Re: If x > 0, what is the value of x ? [#permalink]

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16 Dec 2015, 10:05

(1) x>5 => doesn't tell us anything about x. It could be 6, or it could be 20. NOT SUFFICIENT.
(2) 40 - x^2 = 4
So, 36=x^2
So, x = -6 or x = +6

Since we are given x>0, x = +6
SUFFICIENT
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Re: If x > 0, what is the value of x ?   [#permalink] 16 Dec 2015, 10:05
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