通过计算判别式的值，我们可以判断这个二次方程有两个不同的实数根。

By calculating the ___discriminant, we can determine if the quadratic equation has two distinct real roots.

在数据分析中，这个特征是区分客户群体的关键判别标准。

In data analysis, this feature serves as the primary ___discriminant for customer segmentation.