What is imaginary numbers?

a negative numbers
a numbers which, after multiplying, give a negative result
a numbers that, when squared, has a negative result
all numbers which are not rational numbers
Essentially, an imaginary number is the square root of a negative number and does not have a tangible value. While it is not a real number — that is, it cannot be quantified on the number line - imaginary numbers are "real" in the sense that they exist and are used in math. Imaginary numbers are particularly applicable in electronics.
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Answers by country

a negative numbers
a numbers which, after multiplying, give a negative result
a numbers that, when squared, has a negative result
all numbers which are not rational numbers
answers
flagAustria
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flagthe Netherlands
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flagPoland
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flagMalaysia
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flagGreece
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flagthe United States
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flagIndia
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27%
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flagGermany
3%
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29%
64
flagthe United Kingdom
4%
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41%
95
flagAustralia
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33%
38%
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flagCanada
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27%
61%
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flagPakistan
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15
flagFrance
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flagNigeria
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