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Math Expert
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Re: If x > 0, what is the value of x ? [#permalink]
From statement 2, x^2 = 36 and x = +6 or -6

But the question conveniently mentions x>0, so it has to be +6, so Statement 2 is sufficient --> Answer B
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Re: If x > 0, what is the value of x ? [#permalink]
Bunuel wrote:
If x > 0, what is the value of x ?

(1) x > 5
(2) 40 – x^2 = 4


Its given x> 0, can x can be only +ive numbers

Lets attack (2) first

(2) 40 – x^2 = 4
x^2 = 36
x = 6

Sufficient

(1) x > 5
Can be any value

B
GMAT Club Bot
Re: If x > 0, what is the value of x ? [#permalink]
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Math Expert
94404 posts