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a = √2i = √2(√-1) = √-2 = -(√2)i
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Answer :
(A) a = 1+i
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Explanation :
Given , i =√(-1)
a = √2i
a = √(1-1+2i)
a =√(1+i² +2×1×i) [(√-1)² = -1→i²=-1]
a = √(1+i)²
a = 1+i
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