The other intrepetation is the square root of 8..................simplified to 2 times the square root of 2..........two 2's.........

square root(8) =

2.82842712475

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More info

Mathway | Simplify square root of 8

https://www.mathway.com/popular-problems/Algebra/200509

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Simplify square root of 8.

Simplifying Square Roots - Math is Fun

https://www.mathsisfun.com/numbers/simplify-square-roots.html

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To simplify a square root: make the number inside the square root as small as possible ... Example: √8 is simpler as 2√2 ... (Because the square root of 4 is 2).