0.00390625
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The square root of 1/16 is 1/4, so yes it's rational.
Nothing. You cannot have a square root of a negative number. The square root of negative one is called i, but i is an imaginary number. It does not exist and does not follow the properties of real numbers. (For example, if a and b are positive, then the square root of a times the square root of b is the square root of ab. But the square root of -7 is not the square root of 7 times i.)
No it is an Imaginary Number√-16 = 4ii is the square root of negative one
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.
i is the symbol for an imaginary number, a complex number with the property i2=-1. The square root of a negative number is the square root times i. For example, the square root of -9 = 3i.