二次根式大小的比较在人教版的教材中,只在“读一读”中作了简单介绍,而这方面的内容在近年来各地的中考题中屡屡出现.本文举例说明二次根式大小比较的方法,供同学们参考. 对于给定的两个二次根式,可将根号外的因子移到根号内,再比较被开方数的大小. The comparison of the size of the secondary roots in the teaching materials of the People’s Education Press is only briefly introduced in “Reading and Reading”, and the contents of this area have repeatedly appeared in the examination questions in various places in recent years. This article illustrates the size of secondary roots. The comparison method is for students’ reference. For the given two quadratic roots, the factors outside the root number can be moved to the root number, and the size of the squared number can be compared.