平方根和算术平方根的概念是实数这一章的重点内容,两者既有区别也有联系.区别在于正数的平方根有2个,而他的算术平方根只有一个.联系在于正数的两个平方根互为相反数,其中正的平方根就是算术平方根.学生在解决相关问题时,往往不能够很好的辨别,或者需要较长的时间才能识别,或者做了错误的选择.究竟如何识别这两个概念,如何辨析 The concept of square root and arithmetical square root is the key content of the real number chapter, there are both the difference and the relationship between the difference is that there are two square root of the positive, and his arithmetic square root has only one. The connection is positive two square root mutual Is the opposite, where the positive square root is the square root of arithmetic.Students in the resolution of related problems, often not be able to distinguish very well, or take a long time to identify, or made the wrong choice .How to identify these two concepts How to identify