Since 8x8 = 64 and (-8)x(-8) is also = 64
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That simply means that there is both a positive and a negative number which, when squared, gives you 64.
The positive square root of 50.6944 is approximately 7.1204. This value is obtained by taking the square root of 50.6944, which equals 7.1204. The positive square root is the non-negative value that, when multiplied by itself, equals the original number.
The square root of a real number is not always positive. The square root of any positive number is positive, the square root of zero is zero (not positive), and the square root of a negative number is complex (i.e. neither positive nor negative). The square root of 16 = -4 or 4. The square root of 0 = 0 The square root of -16 = -4i or 4i
The square root of 100 is 10 but positive and a negative is a negative so it is negative 10
When a negative number is squared, the negative sign is essentially squared along with the number, resulting in a positive value. However, when taking the square root of a positive number, we are looking for the value that, when squared, gives us the original positive number. Since both a positive and negative number can square to the same positive value, the convention is to consider the principal (positive) square root by default. The negative square root is also a valid solution in many contexts, but for simplicity and consistency, the positive square root is typically chosen.