X varies directly as y would be
x vairies inversly as y would be
not sure if the y is on the bottom or on top from looking at the question
<span> (256 • (x3) - ( 2^2• 5^3 y^3)
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</span><span> 2^8 x^3 - ( 2^2 • 5^3 y^3)
</span>
256x^3 - 500y^3 = 4 • (64x^3 - 125y^3)<span>
</span><span>
64x^3 - 125y^3
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<span>final factoization:
(4x - 5y) • </span><span> (16x^2 + 20xy + 25y^2)</span><span> </span>
