syv11,
x^6 - y^6 = 0
so (x^3 - y^3)(x^3 + y^3) = 0
Now stmt - 1 alone can not stand. Same as stmt - 2.
But taken together, (x^3 + y^3) > 0
So (x^3 - y^3) should be equal to 0
IMO C
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X^6-Y^6=0
Source: Beat The GMAT — Data Sufficiency |
