\( \frac{1+7 i}{(2-i)^{2}} \) को \( a+i b \) के रूप में व्यक्त कीजिए।

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\( \frac{1+7 i}{(2-i)^{2}} \) को \( a+i b \) के रूप में व्यक्त कीजिए।
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