The middle school stage involves the calculation of square root, one is to look up the math table, the other is to use a calculator. The most common way to solve problems is to solve them by decomposing prime factors. For example, simplify √ 1024 because 1024 = 2 10. √ 1024=2^5=32; Another example is √1256 = √ (cube of 2 *157) = 2 * √ (2 *157) = 2 √ 314.

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.

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The earliest written records can be found in "Shaoguang" in Nine Chapters of Arithmetic. At the same time, Nine Chapters Arithmetic is a comprehensive historical work and the most concise and effective applied mathematics in the world at that time. Its appearance marks the formation of a complete system of ancient mathematics in China.

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.

Nine Chapters Arithmetic is a mathematical monograph written by Zhang Cang and Geng Shouchang in ancient China. It is the most important of the ten computing classics, written about the first century A.D., and its author can no longer be examined.

It is generally believed that it has gradually become the final version after several generations of supplement and modification. Zhang Cang and Geng Shouchang in the Western Han Dynasty had been supplemented and sorted out, and they were generally finalized at that time. The last book was written at the latest in the early years of the Eastern Han Dynasty, and most of it was circulated in the Sanhe period in the fourth year of Jingyuan in Wei Yuan Dynasty (263). Liu Hui made nine chapters of notes.