数的开方学习的主要内容是平方根与算术平方根.学习时必须正确理解算术平方根和平方根的意义,一个数的算术平方根一定是这个数的平方根,而一个数的平方根则包括它的算术平方根及其算术平方根的相反数.此外,还须掌握平方根的意义、表示法、求平方根的基本方法等.而在实际运算中,弄清平方根的不同情况是正确解题的依据,从定义出发解题是解答本章有关题目的常用方法. The main contents of the square root of the number learning are the square root and the square root of the arithmetic. The square root and the square root of arithmetic must be correctly understood when learning. The square root of the square of a number must be the square root of the number, and the square root of a number includes its square root of arithmetic and The inverse of the square root of its arithmetic. In addition, it is necessary to grasp the meaning of square roots, representations, and basic methods for finding square roots. In actual calculations, it is necessary to clarify the different cases of square roots as the basis for correct problem solving. This is a common way to answer the questions in this chapter.