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Data Sufficiency (DS) | Re: Is x^3 > 0? (1) (x + y)(x – y) = 0 (2) x = |y|

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AlisherChaman wrote:

niks18 wrote:
Bunuel wrote:
Is x^3 > 0?

(1) (x + y)(x – y) = 0
(2) x = |y|


The question essentially asks is\(x>0\) i.e.positive

Statement 1 : implies\(x=-y\) or\(x=y\) . but we don't know what is the sign of\(y\) . Henceinsufficient

Statement 2 mod is always positive. hence\(x\) must be positive for\(x=|y|\) to hold true. Hencesufficient

OptionB

I think it is wrong. because x can also be 0 in statement 2, which makes the statement insufficient.

Sent from my SM-J120H usingGMAT Club Forum mobile app

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