A square root is a number raised to the exponent (power) 1/2.
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the square root of a number is the same as the number with exponent 1/2; the square root of X is X to the 1/2 power
Exponents are usually written like this: 3^2 means "3 to the second power". Square roots are often written with sqrt in front, such as as sqrt(5)
Replace the radical sign with the exponent 0.5. For example sqrt(7) = 70.5
They are inverse relations. That is,if A and B are any numbers andif A is the square of Bthen B and -B are the square roots of A.
See the related link for a detailed description of a manual method for calculating square roots.
Working the exponents or roots is first in the order of operations.You do those even before multiplication or division.