问几道高一的数学题(在线1小时等)1.已知非空集A=(x,y)|(a2-1)x=(a-1)y=15},B={(x,y)y=(5-3a)x-2a}.若A∩B为空集,求实数a的值.2.集A={x|x2-px+4=0},B={x|x2-qx+r=0}.p、q、r为实常数.若A∪B={1、2、4}.求(p、q
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![问几道高一的数学题(在线1小时等)1.已知非空集A=(x,y)|(a2-1)x=(a-1)y=15},B={(x,y)y=(5-3a)x-2a}.若A∩B为空集,求实数a的值.2.集A={x|x2-px+4=0},B={x|x2-qx+r=0}.p、q、r为实常数.若A∪B={1、2、4}.求(p、q](/uploads/image/z/2604624-24-4.jpg?t=%E9%97%AE%E5%87%A0%E9%81%93%E9%AB%98%E4%B8%80%E7%9A%84%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E5%9C%A8%E7%BA%BF1%E5%B0%8F%E6%97%B6%E7%AD%89%EF%BC%891.%E5%B7%B2%E7%9F%A5%E9%9D%9E%E7%A9%BA%E9%9B%86A%3D%EF%BC%88x%2Cy%EF%BC%89%7C%EF%BC%88a2-1%EF%BC%89x%3D%28a-1%29y%3D15%7D%2CB%3D%7B%28x%2Cy%29y%3D%285-3a%29x-2a%7D.%E8%8B%A5A%E2%88%A9B%E4%B8%BA%E7%A9%BA%E9%9B%86%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%80%BC.2.%E9%9B%86A%3D%7Bx%7Cx2-px%2B4%3D0%7D%2CB%3D%7Bx%7Cx2-qx%2Br%3D0%7D.p%E3%80%81q%E3%80%81r%E4%B8%BA%E5%AE%9E%E5%B8%B8%E6%95%B0.%E8%8B%A5A%E2%88%AAB%3D%7B1%E3%80%812%E3%80%814%7D.%E6%B1%82%EF%BC%88p%E3%80%81q)
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