11
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Yes - the square root of 121 is equal to ±11.
± 11
Yes, the square root of negative 121 is undefined in the set of real numbers. However, in the set of complex numbers, the square root of negative 121 is equal to 11i, where i is the imaginary unit.
The square root of 121 is 11 and 11 plus 49 = 60
square root of 49 is 7 square root of 121 is 11