论文部分内容阅读
二次根式的概念、性质比较抽象,且其化简运算比整式和分式要复杂得多,是同学们学习的难点.怎样正确地化简二次根式呢?笔者提出以下四点建议,供同学们在学习时参考.1.注意挖掘二次根式的双重非负性二次根式中的被开方数可以是数,也可以是单项式、多项式以及分式等代数式,但必须保证a≥0,这是姨a作为二次根式的前提条件,因为负数没有平方根.同时,还应该注意
The concept of the second radical is abstract in nature, and its simplification operation is much more complex than the integral and fractional, so it is a difficult point for the students to study.How to correctly simplify the second radical? I propose the following four suggestions for Students in the study reference .1 Note that the excavation of the quadratic root of the double nonnegative root quadratic root can be the number of open, it can be monomial, polynomial and fractional algebra, but must ensure that a ≥ 0 , This is aunt a premise as a double root, because the negative square root. At the same time, it should also be noted