有一道集合类的问题已知集合A={x|x²-3x+2=0},B={x|x²-ax+a-1=0},C={x|x²-mx+2=0},且A∪B=A,A∪C=C,求a与m的值或范围
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![有一道集合类的问题已知集合A={x|x²-3x+2=0},B={x|x²-ax+a-1=0},C={x|x²-mx+2=0},且A∪B=A,A∪C=C,求a与m的值或范围](/uploads/image/z/8822418-42-8.jpg?t=%E6%9C%89%E4%B8%80%E9%81%93%E9%9B%86%E5%90%88%E7%B1%BB%E7%9A%84%E9%97%AE%E9%A2%98%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%7Bx%7Cx%26%23178%3B-3x%2B2%3D0%7D%2CB%3D%7Bx%7Cx%26%23178%3B-ax%2Ba-1%3D0%7D%2CC%3D%7Bx%7Cx%26%23178%3B-mx%2B2%3D0%7D%2C%E4%B8%94A%E2%88%AAB%3DA%2CA%E2%88%AAC%3DC%2C%E6%B1%82a%E4%B8%8Em%E7%9A%84%E5%80%BC%E6%88%96%E8%8C%83%E5%9B%B4)
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