Question 958645
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What are the Interval Notation of 2x/(x-4)-1 ≥-1
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In his post, @lwsshar3 produced the answer (-∞, 0] U [4, ∞).


In this form, the answer is incorrect.


The correct answer is (-∞, 0] U (4, ∞).



Find the difference.


(Hint: the difference is that number '4' is not in the solution set.)