Question

(1/iota - 1)^3 evaluate ..
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Answer 1

$\: \: \: {(\frac{1}{i - 1})}^{3} \\ = \frac{ {1}^{3} }{ {(i - 1)}^{3} } \\ = \frac{1}{ {i}^{3} - 1 - 3i(i - 1) } \\ = \frac{1}{ - i - 1 - 3 {i}^{2} + 1 } \\ = ( \frac{1}{ 3- i} )$