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一次函数与方程（不等式）

> 关于x的方程x 2 – mx – 2 =" 0" ( m为实数)的根的情况是 A.有两个不相等的实数根 B.有两个相等的实数根 C.没有实数根 D.有没有实数根不能确定

问题：

发布时间：2024-09-12

关于x的方程x ² – mx – 2 =" 0" ( m为实数)的根的情况是

A.有两个不相等的实数根
B.有两个相等的实数根
C.没有实数根
D.有没有实数根不能确定

参考答案：

提问用户：1b***tHn

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