Solve the quadratic equation and express all nonreal complex solutions in terms of i.x2 + 80 = 0
A. {±4i}
B. {±i
}
C. {±20i}
D. {±4i
}
Answer: D
Mathematics
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A. - 
ln 4
B. 
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C. 
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A. 
B. 
C. 
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