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I am not sure I fully comprehend

From second condition I get
89^10 + 1^10 or 9^10 + 9^10..which result in two different numbers..Therefore both conditions should be insufficient..

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IMO C Fisrt condition satisfied by a variety of integers and fractions..I chose 2 and -0.25 for this test Second condition however eliminates all positive integers and all integers for that matter..since square - 1 has to be negative..Therefore we are left with only negative fractions whose square i...

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StarDust845 wrote:Is the answer A?

Calista.

First condition is not sufficient

Here is a clue
a^3 + b^3 = x^3+y^3 = 1729...a,b could be 12,1 or 10,9

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Taxi Cab Number

Q] If x,y,a,b are all positive Integers and x^3 + y^3 = a^3 + b^3, then is xy>89

1] a^3 + b^3 = 1729
2] x^2 = x^3


Suggest best approach to tackle this questions

Source: Taxi Cab Number/Hardy & something number