There is a method , based on the binomial series, that my Dad learned in school and which he taught me in an hour or so when I was in fifth grade, to find square roots. It is easy enough to be useful but takes a little while to learn to do quickly, so few if any grade school teachers learn it . The say use a calculator and apparently their supervisors agree. (sad, I think),.
I do find a web page that I have added as a related link just below. I hope you can find and follow what it says.
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A number is a perfect square when you can directly extract its square root in whole numbers and without approximation. When you subject a certain number to a radical sign, you can extract its square. Example: 25 is a perfect square. it's square root is 5, since 5 x 5 is equal to 25
a number is a perfect square when you can directly extract its square root in whole numbers and without approximation. when you subject a certain number to a radical sign, you can extract its square. example: 25 is a perfect square. it's square root is 5, since 5 x 5 is equal to 25
The square root is the number which is times by itself, to get the square number.
the square root of a number is the number that is multiplied by itself to get that number, for example the square root of 9 is 3
Nothing. You cannot have a square root of a negative number. The square root of negative one is called i, but i is an imaginary number. It does not exist and does not follow the properties of real numbers. (For example, if a and b are positive, then the square root of a times the square root of b is the square root of ab. But the square root of -7 is not the square root of 7 times i.)