已知抛物线=x2+2mx+m -7与x轴的两个交点在点(1,0)两旁已知抛物线=x2+2mx+m -7与x轴的两个交点在点(1,0)两旁,则关于x的方程 x2+(m+1)x+m2+5=0的根的情况是( )(A)有两个正根 (B)有两个负
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 06:36:30
![已知抛物线=x2+2mx+m -7与x轴的两个交点在点(1,0)两旁已知抛物线=x2+2mx+m -7与x轴的两个交点在点(1,0)两旁,则关于x的方程 x2+(m+1)x+m2+5=0的根的情况是( )(A)有两个正根 (B)有两个负](/uploads/image/z/6880080-48-0.jpg?t=%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%3Dx2%2B2mx%2Bm+-7%E4%B8%8Ex%E8%BD%B4%E7%9A%84%E4%B8%A4%E4%B8%AA%E4%BA%A4%E7%82%B9%E5%9C%A8%E7%82%B9%EF%BC%881%2C0%EF%BC%89%E4%B8%A4%E6%97%81%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%3Dx2%2B2mx%2Bm+-7%E4%B8%8Ex%E8%BD%B4%E7%9A%84%E4%B8%A4%E4%B8%AA%E4%BA%A4%E7%82%B9%E5%9C%A8%E7%82%B9%EF%BC%881%2C0%EF%BC%89%E4%B8%A4%E6%97%81%2C%E5%88%99%E5%85%B3%E4%BA%8Ex%E7%9A%84%E6%96%B9%E7%A8%8B+x2%2B%EF%BC%88m%2B1%EF%BC%89x%2Bm2%2B5%3D0%E7%9A%84%E6%A0%B9%E7%9A%84%E6%83%85%E5%86%B5%E6%98%AF%EF%BC%88+%EF%BC%89%EF%BC%88A%EF%BC%89%E6%9C%89%E4%B8%A4%E4%B8%AA%E6%AD%A3%E6%A0%B9+%EF%BC%88B%EF%BC%89%E6%9C%89%E4%B8%A4%E4%B8%AA%E8%B4%9F)
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