Math, asked by HARRY54431, 9 hours ago

Express (5-3i)2 in the form a+ib

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Answered by sandy1816

0

$( {5 - 3i})^{2} \\ \\ = {5}^{2} + ( {3i})^{2} - 2 \times 5 \times 3i \\ \\ = 25 - 9 - 30i \\ \\ = 16 - 30i$

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