NCERT Class XI Mathematics - Complex Numbers and Quadratic Equations - Solutions

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Question : 8
Total: 52
(1−i)4
Solution:  
(1−i)4 = [(1−i)2]2 = [1−2i+i2]2 = [1−2i+(−1)]2
= (−2i)2 = 4i2 = 4 (- 1) = - 4 = - 4 + 0i
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