Question

y-1/y=3,find y^3-1/y^3

Answer 1

$\textbf{Answer :}$

Given that,

y - 1/y = 3

Now, y³ - 1/y³

= (y - 1/y)³ + (3 * y * 1/y) (y - 1/y)

= 3³ + 3 (3)

= 27 + 9

= $\textbf{36}$

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