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Variable Separable Method

If x=-6, eval...

Question

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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