The root sign is a symbol used to represent the root of a number.

There is something in junior high school mathematics, that is, when the root sign is opened, it will be an infinite acyclic decimal about 1? 50000.000000000005 That is to say, the arithmetic square root of/kloc-0 1.50000.0000000005 is the root number three, and the square of the root number three is equal to its own 3.