If $x = - 6$ , evaluate:
iii) $2 x^{3}$

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Solution

Given: $2 x^{3}$
Substituting $x = - 6$ in the given expression
$2 x^{3} = 2 \times (- 6)^{3}$
$= 2 \times (- 216)$
$= - 432$
Hence, the value of $2 x^{3}$ for $x = - 6$ is $- 432$ .

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\lim_{x \to 2} \frac{x^{3} + 3 x^{2} - 9 x - 2}{x^{3} - x - 6}

${lim}_{x \to 2} \frac{x^{3} - 3 x^{2} - 9 x - 2}{x^{3} - x - 6}$

x = - 6

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