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Question -

a + ib के रूप में व्यक्त कीजिए।
3(7 + i7) + i (7 + i7)



Answer -

3(7 + i7) + i (7 + i7)
= 21 + 21i + 7i + 7i²
= 21 + 28i + 7(-1) [∵ i² = -1]
= 21 – 7 + 28i
= 14 + 28j

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