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यदि $Z = x + iy$ एक सम्मिश्र संख्या है और $\sqrt{x^2 - 2x + 8} + (x + 4)i = y(2 + i)$ है,तो $Z$ का मान ज्ञात कीजिए।

$\frac{(1+i)^{2011}}{(1-i)^{2009}}$ का मान ज्ञात कीजिए।

यदि $(x + iy)(p + iq) = (x^2 + y^2)i$ है,तो

यदि $(2x - y + 1) + i(x - 2y - 1) = 2 - 3i$ है,तो $(x - iy)$ का गुणात्मक प्रतिलोम (multiplicative inverse) ज्ञात कीजिए।

$\sum_{n=1}^{4} (\sqrt{-1})^{2n} = $

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