Well, isn't that a happy little math problem! The square root of 27 is around 5.196 and the square root of 12 is around 3.464. When you add them together, you get about 8.660. Just like painting a beautiful landscape, math can be a lovely adventure too.
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Expressed as a surd in its simplest form, sqrt(27) + sqrt(12) = 5 sqrt(3). Expressed as a decimal, rounded to two decimal places, this is equal to 8.66.
The square root of 27 plus the square root of 5 = 7.4322204
13.856406
27i where i is the square root of -1.
-27 does not have a square root. The mathematical expression for the square root of-1 is i.
√3 x √27 = 9