Question

simplyfy (2-3i)^3 ans???​

Answer 1

Answer:

$(2 + 3i)^{3} \\ = > {2}^{3} + 2( {2)}^{2} i + 2(2) {i}^{2} + {i}^{3} \\ = > 8 + 8i + 4( - 1) + ( - i)$

(Since, ${i}^{2} = - 1 \\ {i}^{3} = - i$)

So we get

$= > 4 - 7i$

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