初三《代数》中学习一元无理方程的解法时 ,强调所求出的根必须检验 .通常验根的方法是把所求的根代入方程的两边 ,看能否使等式成立 .这样做虽然很常规 ,但比较麻烦 .现再介绍一些简单的验根方法 ,供同学们解题时参考 .一、ｆ(ｘ) =ａ型这种类型的方程左边是算术根 ,右边是常 When studying the solutions of the unary irrational equation in the third generation of “Algebra,” the emphasis must be on the roots to be tested. The usual method of root detection is to substitute the roots of the equations into the sides of the equation to see if the equality can be established. Very conventional, but more troublesome. Now introduce some simple root detection method for students to solve the problem when referencing. First, f (x) = a type This type of equation is left on the arithmetic root, the right is often