Quizzes & Puzzles18 mins ago
square root
what is the square root of -5
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For more on marking an answer as the "Best Answer", please visit our FAQ.As stevie21 says, the result is an "imaginary" number. Any number when multiplied by itself must result in a positive answer (negative times a negative is a positive). So there cannot be a "real" square root of a negative number. However in some practical cases it is useful to be able to pretend that there is such a thing. One example is in the calculations for crossover frequencies in loudspeakers.