Square (Algebra)
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In algebra, the square of a number is that number multiplied by itself. To square a quantity is to multiply it by itself. Its notation is a superscript "2"; a number x squared is written as x2. Thus: If x is a positive real number, the value of x2 is equal to the area of a square of edge length x. A positive integer that is the square of some other integer, for example 25 which is 52, is known as a square number, or more simply a square. The square of any nonnegative ...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In algebra, the square of a number is that number multiplied by itself. To square a quantity is to multiply it by itself. Its notation is a superscript "2"; a number x squared is written as x2. Thus: If x is a positive real number, the value of x2 is equal to the area of a square of edge length x. A positive integer that is the square of some other integer, for example 25 which is 52, is known as a square number, or more simply a square. The square of any nonnegative integer n can be represented as the sum 1 + 1 + 2 + 2 + ... + (n 1) + (n 1) + n. For instance, the square of 4 or 42 is equal to 1 + 1 + 2 + 2 + 3 + 3 + 4 = 16. This is the result of adding a column and row of thickness 1 to the square graph of three (like a tic tac toe board). You add three to the side and four to the top to get four squared. This can also be useful for finding the square of a large number quickly.
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