(x²-1)(x²-6x+8)≥0的解集
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![(x²-1)(x²-6x+8)≥0的解集](/uploads/image/z/10892515-67-5.jpg?t=%EF%BC%88x%26%23178%3B-1%EF%BC%89%EF%BC%88x%26%23178%3B-6x%2B8%EF%BC%89%E2%89%A50%E7%9A%84%E8%A7%A3%E9%9B%86)
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(x²-1)(x²-6x+8)≥0的解集
(x²-1)(x²-6x+8)≥0的解集
(x²-1)(x²-6x+8)≥0的解集
(x²-1)(x²-6x+8)=(x+1)(x-1)(x-2)(x-4)
通过穿根法,可以得出
其解集为(-∞,-1]∪[1,2]∪[4,+∞)