Yes, there are several. using the square root sign is the most common, but for some purposes using the power of half - i.e. x0.5 - is easier to think about.
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Square roots are + or - . So the best way to write this square root is ± 169.
That is the only way to write it exactly.
The square root of 48 can be written as 48 with a square root sign over it, 48 to the 1/2 power, a decimal equivalent (6.92...), or simplified as 4 square-roots of 3.
In the same way that the square root of 25 can be -5 OR +5, the square root of -1 is -i or +i.
Well, there technically is not a way to simplify the square root of 2, but the simplified version of the square root of 72 is 6 square root 2