Divide the number in the root number into a complete square number multiplied by an incomplete square number, for example, divide 28 into 4 (complete square number) and 7 (incomplete square number), and then put the square of the complete square number in front of the root number, then the root number 28 is twice that of the root number 7.

Extended data:

The root sign is a mathematical symbol. 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. 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.

computing formula

Conditions: a≥0, n≥2, n ∈ n

Conditions: a≥0, b≥0, n≥2, n ∈ n

Conditions for establishment: a≥0, b>0, n≥2 and n ∈ n.

Conditions for establishment: a≥0, b>0, n≥2 and n ∈ n.