急 帮我这解这这几道一元二次不等式1.关于X的方程x^2-ax+a^2-1v1=0有个正根一个负根则实数a的取值范围是2.若A={x|ax^2-ax+10对任意实数x恒成立,则k的取值范围是 4.(1)当a>0时解不等式(x-a)(x-1/a)0 (3
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![急 帮我这解这这几道一元二次不等式1.关于X的方程x^2-ax+a^2-1v1=0有个正根一个负根则实数a的取值范围是2.若A={x|ax^2-ax+10对任意实数x恒成立,则k的取值范围是 4.(1)当a>0时解不等式(x-a)(x-1/a)0 (3](/uploads/image/z/13401835-43-5.jpg?t=%E6%80%A5+%E5%B8%AE%E6%88%91%E8%BF%99%E8%A7%A3%E8%BF%99%E8%BF%99%E5%87%A0%E9%81%93%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E4%B8%8D%E7%AD%89%E5%BC%8F1.%E5%85%B3%E4%BA%8EX%E7%9A%84%E6%96%B9%E7%A8%8Bx%5E2-ax%2Ba%5E2-1v1%3D0%E6%9C%89%E4%B8%AA%E6%AD%A3%E6%A0%B9%E4%B8%80%E4%B8%AA%E8%B4%9F%E6%A0%B9%E5%88%99%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF2.%E8%8B%A5A%3D%7Bx%7Cax%5E2-ax%2B10%E5%AF%B9%E4%BB%BB%E6%84%8F%E5%AE%9E%E6%95%B0x%E6%81%92%E6%88%90%E7%AB%8B%2C%E5%88%99k%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF+4.%281%29%E5%BD%93a%3E0%E6%97%B6%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8F%EF%BC%88x-a%EF%BC%89%28x-1%2Fa%290+%283)
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