Sqrt(001) = sqrt(1) = ±1
362 is not the square root of 361
The principal square root is 100.
The principle square root of 64 is ±8.8.* * * * *The square roots of 64 are +8 and -8.The PRINCIPAL square root is the positive root, +8.So, the answer to the question that was asked is +8 not ±8.
The square root of 225 is 15
The square root of 121 is 11
9
12
+70 is.
The square root of a positive real number can either be +/-. The principle square root is defined as the positive value. sqrt(9) is +/- 3, but the principle square root of 9 is 3. For complex numbers the principle square root is the argument (or angle) of the complex number that lies between (-pi,pi]. I am pretty sure that the upper angle pi is closed while the lower angle -pi is open, but not 100%.
The second root would be the negative of the principal root.
(√(a))²=a The square root and the square cancel to leave just 49/21■