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Math and Arithmetic

What is the square root of -28?

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December 24, 2009 3:42PM

the square root of -28 is the square root of -1 time the square root of 28. The square root of -1 is not a real number, it is represented by i. The square root of 28 is the square root of 4 times the square root of 7 (4*7=28) The square root 4 is equal to 2, and the square root of 7 cannot be simplified.

The answer is 2i√7.