Square root attribute
The property that the root sign is a square root. Any positive number has two square roots, which are in opposite directions. For example, the arithmetic square root of a positive number is x, the other square root of a is -X, and the square root of zero is zero. Negative numbers have no square root, so they have physical roots and chemical roots. If the product of two algebras containing roots no longer contains roots, then these two algebras are physicochemical roots, also called physicochemical factors.