直线方程 已知集合A={(x,y)|(y-3)/(x-2)=a+1},集合B={(x,y)|(a²-1)x-(a-1)y=15,a≠±1},已知集合A={(x,y)|(y-3)/(x-2)=a+1},集合B={(x,y)|(a²-1)x-(a-1)y=15,a≠±1},满足A∩B=Φ,求实数a的值不要复制
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