Square (of a Number)
Definition

The square of a number (or the number squared) occurs as the result of multiplying a number with itself.


n: A number.


n2: The square of a number


n2= n x n

Examples

A number: 5


The square of five (or five squared): 52

The square of five (or five squared): (5)(5)

The square of five (or five squared): 25


52 = 25

Divider Line

A number: -5


The square of negative five (or negative five squared): (-5)2

The square of negative five (or negative five squared): (-5)(-5)

The square of negative five (or negative five squared): 25


(-5)2 = 25

Demonstration
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Another Example

Expressions as well as numbers can be "squared"


An expression: x + 3


The square of the expression: (x + 3)2

The square of the expression: (x + 3)(x + 3)

The square of the expression: x2 + 3x + 3x + 9

The square of the expression: x2 + 6x + 9


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