已知集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0} (1)已知集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0}(1)若A∩B={2},求实数a的值;(2)若A∪B=A,求实数a的取值范围
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![已知集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0} (1)已知集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0}(1)若A∩B={2},求实数a的值;(2)若A∪B=A,求实数a的取值范围](/uploads/image/z/2539317-21-7.jpg?t=%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%EF%BD%9Bx%EF%BD%9Cx2%EF%BC%8D3x%EF%BC%8B2%3D0%EF%BD%9D%2CB%3D%EF%BD%9Bx%EF%BD%9Cx2%2B2%EF%BC%88a%2B1%EF%BC%89x%2B%EF%BC%88a2-5%EF%BC%89%3D0%EF%BD%9D+%EF%BC%881%EF%BC%89%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%EF%BD%9Bx%EF%BD%9Cx2%EF%BC%8D3x%EF%BC%8B2%3D0%EF%BD%9D%2CB%3D%EF%BD%9Bx%EF%BD%9Cx2%2B2%EF%BC%88a%2B1%EF%BC%89x%2B%EF%BC%88a2-5%EF%BC%89%3D0%EF%BD%9D%EF%BC%881%EF%BC%89%E8%8B%A5A%E2%88%A9B%3D%EF%BD%9B2%EF%BD%9D%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%80%BC%3B%EF%BC%882%EF%BC%89%E8%8B%A5A%E2%88%AAB%3DA%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)
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