If $x = - 2$ , then find the value of $x^{3} - x^{2} - x - 1$

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Solution

$x = - 2 T h e n, x^{3} - x^{2} - x - 1 = {(- 2)}^{3} - {(- 2)}^{2} - 2 - 1 = - 8 - 4 - 2 - 1 = - 11$

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