Question 1172131
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First, take the square root of both sides.  You will get

    x - 1 = +/- 2i   


in the complex domain, where " i " is the imaginary unit.



Now add 1 to both sides to get the answer

    x = 1 +/- 2i.



<U>ANSWER</U>.  There are two complex roots in the complex domain, 1+2i and 1-2i.
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Solved.