The second square number is 4 as 2 squared is 4. The first is 1.
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The principal square root is a positive number which, when multiplied by itself, gives the original number. The second square root is the negative of the principal square root. So, for example, starting with 144. The principal square root is 12 because 12*12 = 144 and the second square root is -12.
That is also called "squaring the number", or "raising the number to the second power".
The number you are referring to is the square root of the second number. In mathematical terms, if you have a number "x" and it produces the square of another number "y" when multiplied by itself, then x is the square root of y. For example, if x * x = y, then x is the square root of y.
The square of the second number.
The square root is the area in which you take 1 length and you multiply that number times the same number and you have your square root. The square you put it on graph paper and you size is going to be 3x3 then you connect the dots and count how may squares you have and that is your answer.There is an inverse relationship. If one number is the square of another then the second number is the square root of the first number.