问几道数学题(关于一元二次方程)1:已知一元二次方程(m-1)x方+2mx+m+2=0有两个实数根,求m的取值范围2:判断方程根情况 x方-(k+3)x+k-1=o3:已知关于x的方程kx方+2(k+1)x-3=0(1)请你为k选取
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![问几道数学题(关于一元二次方程)1:已知一元二次方程(m-1)x方+2mx+m+2=0有两个实数根,求m的取值范围2:判断方程根情况 x方-(k+3)x+k-1=o3:已知关于x的方程kx方+2(k+1)x-3=0(1)请你为k选取](/uploads/image/z/698789-29-9.jpg?t=%E9%97%AE%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E5%85%B3%E4%BA%8E%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B%EF%BC%891%EF%BC%9A%E5%B7%B2%E7%9F%A5%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B%28m-1%29x%E6%96%B9%2B2mx%2Bm%2B2%3D0%E6%9C%89%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E6%A0%B9%2C%E6%B1%82m%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B42%EF%BC%9A%E5%88%A4%E6%96%AD%E6%96%B9%E7%A8%8B%E6%A0%B9%E6%83%85%E5%86%B5+x%E6%96%B9-%EF%BC%88k%2B3%EF%BC%89x%2Bk-1%3Do3%EF%BC%9A%E5%B7%B2%E7%9F%A5%E5%85%B3%E4%BA%8Ex%E7%9A%84%E6%96%B9%E7%A8%8Bkx%E6%96%B9%2B2%EF%BC%88k%2B1%EF%BC%89x-3%3D0%EF%BC%881%EF%BC%89%E8%AF%B7%E4%BD%A0%E4%B8%BAk%E9%80%89%E5%8F%96)
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