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在初中数学中,我们经常遇到代数式的求值问题,在这类问题中,方法和技巧尤为关键,现介绍几种常用的方法.1.降次法例1 已知α、β分别是方程
In junior high school mathematics, we often encounter the problem of algebraic type evaluation. Among these problems, methods and techniques are particularly critical. Now we introduce several common methods. 1. Decreased order law 1 Know that α and β are equations