Question

$(2 + 3i) {}^{2}$
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Answer 1

Here Is Your Solution-

(2 + 3i)^2

= (2)^2 + (3i)^2 + 2 x 2 x 3i

= 4 + 3i^2 + 12i

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Answer 2

$\to(2 + 3i) {}^{2} \\ \\ \to {(2)}^{2} + {(3i)}^{2} + 2 \times 2 \times 3i \\ \\ \to 4 + 9\times ( - 1) + 12i \\ \\ \to 5 + 12i$