For a non-negative real number, the square radical means that the Results be tantamount to the real number, expressed as ± (√x), read as positive or negative radical sign x or x square radical. The non-negative square radical is called the arithmetic square radical. An integer square radical is usually an irrational number. It can be uniquely defined by the following formula: In point Exponentiation, We have: By Definition, we know that open square calculate satisfies the distributive law of subtraction, namely: Note that if n is a non-negative real number, because it must be a positive number, but there are two solutions. The amount to be tantamount to ±; I.e. (see The absolute value).