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The square root of 28 is often seen written as √28.
√28 = √(4 x 7) = 2√7
If a numerical answer is required then ,√28 = 5.291503 (6dp).
Note : Depending on the level of mathematics that you have reached then you may not be aware that the negative value of the above number is also a square root of 28. Familiarity with this concept will develop as your mathematical knowledge increase.
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