Square root is also called quadratic square root, which is expressed as √ ~ where the non-negative square root is called arithmetic square root. Positive numbers have two real square roots in opposite directions, while negative numbers have no square roots.
The greater the root sign, the greater the corresponding arithmetic square root (true for all positive numbers). In a real number system, negative numbers cannot be squared. Only in a complex number system can a negative number be squared, and the square root of the negative number is the pure imaginary number of a pair of yokes.
The radical sign is a mathematical operation.
Simply put, it is to multiply the same numbers together and restore them by looking at their products.
The root sign is a mathematical symbol, and the root sign is a symbol used to represent the root operation of a number or an algebraic expression. If a? =b, then A is the n-th root of B or A is the 1/n power of B. The n-th handwritten and printed characters are represented by, and the number of roots or algebraic expressions are written in the area surrounded by the left side of the symbol and the right side of the horizontal part above the symbol, which cannot be out of bounds.