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The answer is easy to understand if we temporarily replace the phrase "square roots of 11"

with the word "bean".

Then the question becomes: "2 beans plus 3 beans", and we sense instinctively that the answer

must be something close to 5 beans.

In similar fashion . . .

2 sqrt(11) + 3 sqrt(11) = 5 sqrt (11).

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15y ago

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