a positive square like if you have -2^2 it would be 4
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It is positive.
The square root of any negative number is not even a 'real' number. It's called 'imaginary', because there's no number you can multiply by itself to get a negative number. The square root of 101 is irrational.
The square of a negative number is always positive. The square of -8 = 64, a rational number
The square of a positive number is positive. By the way, the square of a negative number is also positive.
The square root of negative 64 isn't even a real number. In math and engineering, it's called an "imaginary number".