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FIND THE CUBE OF THE QUESTION IN ATTACHMENT
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(3a-1/a)³
=9a³-1/a³-3×9a²×1/a -3×3a×1/a²
=9a³-1à³-27a-9a
=9a³-1a³-36a
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Step-by-step explanation:
= (3a - 1/a)³
= (3a)³ + 3(3a)²*(-1/a) + 3*(3a) *(-1/a)² + (-1/a)³
= 27a³ - 27a + 9/a - 1/a³
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