what is a SQUARE ROOT?
sqrt(x) * sqrt(x) = x
sqrt(x) = x ^ (1/2)
details:
http://en.wikipedia.org/wiki/Square_root
A square root is a mathematical operation that determines the value which, when multiplied by itself, gives a specific number. In other words, it is the number that, when squared, equals the given number.
For example, the square root of 25 is 5 because 5 multiplied by itself (5 * 5) equals 25.
The square root is denoted by the symbol √. It is commonly written as sqrt(x), where x represents the number for which we want to find the square root.
There are a few different ways to calculate the square root:
1. Using a calculator: Most scientific calculators have a square root function, usually represented by a button labeled "√" or "sqrt." You simply enter the desired number and press the square root button, and the calculator will give you the square root.
2. Using exponentiation: The square root (√) of a number x can also be expressed using exponentiation. The square root of x can be written as x^(1/2). This means raising x to the power of 1/2. For example, the square root of 25 can be calculated as 25^(1/2), which equals 5.
It is important to note that the square root of a positive number has both a positive and a negative value. For instance, both +5 and -5 are square roots of 25 because (±5) * (±5) = 25. However, when we refer to the square root of a number, we usually mean the positive square root unless specified otherwise.