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Question

If one root of the equation x2+(13i)x2(1+i)=0 is 1+i, then the other root is

A
1i
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B
(1i)2
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C
i
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D
2i
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Solution

The correct option is A 2i
Let another root of the equation
x2+(13i)x2(1+i)=0isα
a+(1+i)=(13i)
a=1+3i+1i
=2i
x2+(13i)x2(1+i)=0isα

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