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Question

If x=1+i is a root of the equation x3ix+1i=0, then the other real root is

A
0
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B
1
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C
1
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D
None of the above.
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Solution

The correct option is C 1
Given equation is
x3ix+1i=0
x3+1i(x+1)=0
(x+1)(x2x+1i)=0
Real root of given equation is x=1

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