They are -4.12 and +4.12
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3.45
The nearest whole number to the square root of 274 is seventeen (17).
the square root of 17 is 4.123105625617661
Rounded to two decimal places, the square root of 17 is 4.12.
There is no square root of -289 because it is an imaginary number but the square root of 289 is 17