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a negative number can not have a square root. a positive number times a positive number equals a positive number. a negative number times a negative number equals a positive number.

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A negative number cannot have a square root in basic mathematics. However, in more advanced mathematics, you will study complex numbers. And there you will find that the square roots of -80 are ± 8.944*i where i is the imaginary square root of -1.

Incidentally, ± 8.944 are the square roots of +80.

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Q: Square Root of Negative 80 -80?
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