Question

express(2+3i)^3 in a + ib​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

We have,

$(2 + 3i)^{3}$

$= ({2})^{3} + (3i)^{3} + 3. {(2)}^{2} .3i + 3.2. {(3i)}^{2}$

$= 8 + ( - 27i) + 36i + ( - 54)$

$= - 46 + 9i$