If $y = 7,$ find the value of $y^{3} - 3 (y - 2)$ .

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Solution

$y^{3} - 3 (y - 2)$
Putting $y = 7$
We get, $7^{3} - 3 (7 - 2)$
$= (343 - 15)$
$= 328$

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