Neliöjuurella

Neliöjuurella is a Finnish term that translates to "with a square root" or "square rooted" in English. It refers to the mathematical operation of finding a number which, when multiplied by itself, equals a given number. For example, the square root of 9 is 3, because 3 multiplied by 3 is 9. The symbol for square root is a radical sign ($\sqrt{ }$).

In mathematics, a number can have both a positive and a negative square root. For instance, both 3 and -3 are square roots of 9, as $(3)^2 = 9$ and $(-3)^2 = 9$. However, when the term "neliöjuurella" is used without further specification, it often implies the principal square root, which is the non-negative square root.

The concept of the square root is fundamental in various branches of mathematics, including algebra, geometry, and calculus. It is used in calculating distances, solving quadratic equations, and understanding concepts like variance and standard deviation in statistics. The square root of a number that is not a perfect square, such as 2, results in an irrational number, meaning it cannot be expressed as a simple fraction and its decimal representation goes on infinitely without repeating.