square root of 4=2 and 2^2=4 one way to see this without doing that is to know that for any number, call it a, square root of a can be written as a1/2 and then if we square that and use the rules of exponents we have (a(1/2) )2 =a
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The square root of -4 is: 2 i
The square root of five to the third power is 11.1803398875 (rounded).
Two to the power 8 (28) is 256 The square root of 256 is 16. When you take the square root of a number raised to a power y, divide that power by 2 (y/2) and that gives the square root. So the square root of 28 = 28/2 = 24 = 16
The square root of 43.25 is (to four decimal places) 6.5767