1.

27x° sTyX 3

Answer»

27x³ - 64/x³

(3x)³ - (4/x)³

(3x - 4/x) ( (3x)² + (4/x)² + 3x × (4/x) )

(3x - 4/x) ( 9x² + 16/x² + 12)



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