1.方程x^2+4ax-4a+3=0,x^2+(a-1)x+a^2=0,x^2+2ax-2a=0中至少有一个方程有实数根,求实数a的取值范围.2.已知集合A={x│x^2+px+q=0},B={x│qx^2+px+1=0}.同时满足①A∩B≠空集,②-2∈A(pq≠0),求p,q的值3.已知关于x的
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![1.方程x^2+4ax-4a+3=0,x^2+(a-1)x+a^2=0,x^2+2ax-2a=0中至少有一个方程有实数根,求实数a的取值范围.2.已知集合A={x│x^2+px+q=0},B={x│qx^2+px+1=0}.同时满足①A∩B≠空集,②-2∈A(pq≠0),求p,q的值3.已知关于x的](/uploads/image/z/2720575-55-5.jpg?t=1.%E6%96%B9%E7%A8%8Bx%5E2%2B4ax-4a%2B3%3D0%2Cx%5E2%2B%28a-1%29x%2Ba%5E2%3D0%2Cx%5E2%2B2ax-2a%3D0%E4%B8%AD%E8%87%B3%E5%B0%91%E6%9C%89%E4%B8%80%E4%B8%AA%E6%96%B9%E7%A8%8B%E6%9C%89%E5%AE%9E%E6%95%B0%E6%A0%B9%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.2.%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%7Bx%E2%94%82x%5E2%2Bpx%2Bq%3D0%7D%2CB%3D%7Bx%E2%94%82qx%5E2%2Bpx%2B1%3D0%7D.%E5%90%8C%E6%97%B6%E6%BB%A1%E8%B6%B3%E2%91%A0A%E2%88%A9B%E2%89%A0%E7%A9%BA%E9%9B%86%2C%E2%91%A1-2%E2%88%88A%EF%BC%88pq%E2%89%A00%EF%BC%89%2C%E6%B1%82p%2Cq%E7%9A%84%E5%80%BC3.%E5%B7%B2%E7%9F%A5%E5%85%B3%E4%BA%8Ex%E7%9A%84)
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