1, the root sign cannot be negative, and its operation result is not negative.

2. It can be negative under odd root sign.

Not limited to real numbers, that is, when considering imaginary numbers, even roots can be negative numbers, and i=√- 1 can be used.

The root sign is a symbol used to represent the root operation of a number or an algebra. If a? =b, then a is the n-th root of b or a is the 1/n power of b.

Free radical formula:

√ AB = √ A √ B √ A ≥ 0B ≥ 0 √, √ A/B = √ A √ B, √a2=|a| and so on. Although they can be used interchangeably, they are most commonly used for the simplification of mathematics.

In the range of real numbers, even root sign cannot be negative, and its operation result is not negative.

It can be negative under the odd root sign.

It is not limited to real numbers, that is, when considering imaginary numbers, even the roots can be negative.