plus (+) 70 and minus (-) 70
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Any positive number has two square roots, a positive square root and a negative square root. In this instance, the square root of 4900 is equal to ±70 (that is, 70 and –70).
You find the same two numbers that make the number, then you use one of those numbers for your square root.
The square root of 110 is an irrational number and so it cannot be any two whole numbers.
You can. Just add the numbers together, and find their square root. One plus three is four; the square root of the sum is two.
The square root of 135 is 11.61895. The two whole numbers closest would be 11 and 12.