(-22)2 = 484
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the answer is 4.69041576
you can square a negative number but you can not square root a negative number
square root of a negative number is imaginary square root of negative 1 is defined as i square root of negative 144 is sqrt ((144)(-1)) = 12i
The value of iota square is negative one because that is how it is defined. Iota is defined as the square root of negative one, or iota square must be negative one.
The square root of a negative number is not real.