在进行开方运算之前，我们首先需要导入Math类。可以使用以下语句进行导入： import java.lang.Math; 接下来，我们可以使用Math类中的sqrt方法进行开方运算。sqrt方法的基本语法如下： Math.sqrt(double a) 其中，参数a是需要进行开方运算的数字。该方法会返回参数a的平方 ...

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