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TopicMath is weird.
faramir77
10/26/19 1:05:51 PM
#13:


That only is true if and only if x does not equal 2.

x is a non permissible value in that rational expression. That solution, (2, 4), is what is known as a point of discontinuity. It doesn't actually show up on the graph of that expression.

I teach high school math, this is 11th grade stuff here.
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