12
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The principal square root is a positive number which, when multiplied by itself, gives the original number. The second square root is the negative of the principal square root. So, for example, starting with 144. The principal square root is 12 because 12*12 = 144 and the second square root is -12.
The Square Root of 144 is ± 12the square route of 144 is 12
The principal square root is the non-negative square root.
The square root of 144 is 12 or -12.
The square root of 144 is 12 which is a rational number