年级 | 科目 | 问题描述 | 提问时间 |
初一 | 数学 | 数学求解 | 2013-05-28 13:03:47 |
已知关于X的一元二次方程x²+mx+2=0与x²+2x+m=0有一个公共根,则m= ,该公共根是
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翟政辉 2013-05-28 13:04:35 | |||
x2+mx+2=x2+2x+m (m-2)x=m-2 x=1 当x=1时m=-3 | |||
王浩 2014-05-03 11:01:02 | |||
王浩 2014-05-03 11:01:02 | |||
王亚婷 2014-05-10 18:40:28 | |||
杨长松 2014-07-06 15:23:46 | |||
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吴云杰 2014-07-20 09:01:25 | |||
张宇杰 2014-07-22 13:27:48 | |||
顾丽慧 2014-08-09 10:53:53 | |||
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顾丽慧 2014-08-09 10:54:16 | |||
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顾丽慧 2014-08-09 10:54:32 | |||
李俊杰 2014-09-10 19:42:16 | |||
商懿 2014-09-14 16:12:04 | |||
肖庄臣 2014-09-15 19:44:31 | |||
肖庄臣 2014-09-15 19:45:19 | |||
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许幸枳 2014-10-28 20:37:51 | |||
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