Solve the quadratic equation in the complex number system by completing the square.x2 = -14x - 54
A. {7 - i
, 7 + i
}
B. {-7 - 
, -7 + 
}
C. {-7 - 5i, -7 + 5i}
D. {-7 - i
, -7 + i
}
Answer: D
Mathematics
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A. 
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