What is the square root of -25?
- 5i
- -5
- -2.5
- None of these
Explanation
The square root of -25 is 5i, where i is the imaginary unit (√-1).
Since the square root of a negative number is not a real number, we use imaginary numbers to express it.
So, √(-25) = 5i.
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- (-2A)^B
- -2A²B
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- Cannot be determined
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