4x4=16, and 5x5=25, so 4 and 5 are the whole numbers closest to the square root of 19.
[And incidentally of all the square roots of all the whole numbers between 16 and 25.]
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They are 12 and 13
The two whole number which are -6 (nearest to the negative square root of 34) and +6 (nearest to the positive square root of 34).
The closets number to the square root of 54 is √54 √54 = 7.348... → The closest WHOLE number to the square root of 54 is 7.
The mathematically correct answer is -14 and +14. But I expect you want 13 and 14.
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