最后一句应是一元二次方程，不是二元一次。

来源: QualityWithoutName 于 2022-10-09 21:15:48 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.