X^6-Y^6=0

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X^6-Y^6=0

by syv11 » Wed Nov 28, 2007 11:31 pm
X^6-Y^6=0

What is the value of X^3-Y^3=0

(1) x = positive
(2) y is greater than 1

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by camitava » Thu Nov 29, 2007 12:38 am
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
Correct me If I am wrong


Regards,

Amitava

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by gabriel » Thu Nov 29, 2007 2:30 am
C it is ..

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by syv11 » Thu Nov 29, 2007 6:08 am
C - Thank you!