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Mathematics 7 Online
OpenStudy (anonymous):

lim x=2- x^2 -2X/l x^2-x-2 l <--(this is an absolute value sign) Normally I would do direct sub and I got 0. But, what my teacher did it he got -2/3. I believe approaching from the left made a difference. Can you tell me why or give me another explaination? :)

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