分母有理化是代数中较为常见的一种解题方法,它在化简、求值、解方程、证明恒等式等题目中时常用到.但分子有理化,大家较为生疏.其实分子有理化,在解题上同样有很大用处.本文举例介绍它在解题中的应用. The rationalization of the denominator is a common method of solving problems in algebra. It is commonly used in simplification, evaluation, solution of equations, and verification of identity problems. However, the rationalization of the molecules makes us unfamiliar. In fact, the molecules are rationalized. There is also a great deal of usefulness in solving problems. This article gives an example of its application in problem solving.