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27 votes
The value of \sqrt(-16) is not -4 because

User DonOfDen
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2 Answers

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25 votes
Detailed Answer:

Negative numbers don't have real square roots since a square is either positive or 0.

Also, Square roots of negative numbers are called complex numbers which is a whole new division of numbers. √-2 could also be written as 2i where “i” means iota.
User Toofrellik
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10 votes
10 votes

Answer:

square roots are absolute values

Explanation:

they cannot be any integer or negative number. they had to be an absolute value

User Jacek Marchwicki
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