2 * Square root of 7
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2√7
In radical form, it is √256 But 256 = 28 so √256 = √(28) = 24 = 16
Well, honey, the simplified form of radical 28 is 2√7. So, just take that square root of 28, which breaks down to 2√7. Ta-da!
28 does not have a square root.
First we have to factor the radicand into square factors (Hint: *The best squares* try 100, 25, 16, 9 and 4. If none of these work, then try other square factors.) 4 is a factor of 28 so we can rewrite √28 as √4x7 Since 4 is a square factor, we take the square root of 4 which is 2. We put the 2 in front of the radical symbol: 2√7 Now, the radicand is 7 which does does not have square factor. Therefore the simplified radical is 2√7 . this is read "2 times the square root of 7"