Square (algebra)
In algebra, the square of x is written x2 and is defined as the product of x with itself: x × x. Taking the square is exponentiation with exponent two. If x is a positive real number, the value of x2 is equal to the area of a (geometric) square of edge length x. If y = x2 and x ≥ 0, then x is the square root of y.
A positive integer that is the square of some other integer is known as a square number, or more simply a square.
es:Cuadrado et:Ruut (algebra) fr:Carré (algèbre) nl:Kwadraat pl:Kwadrat (algebra) sv:Kvadrat