WEBVTT
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to evaluate the limits of x squared minus two.
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X over x squared minus four, X plus four
3
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. As X approaches to from the left, we
4
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would rewrite this into the limit as X approaches to
5
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from the left of X Times X-2. This
6
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all over X-2 Squared. And then from here
7
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we can simplify, we can get rid of x
8
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minus two and we have Limit as X approaches to
9
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from the left of X over we still have X
10
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-2 in the denominator. Now, if we plug
11
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in two to this function we have to over 2
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-2, that's two over zero. Now, if
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X approaches to from the left then the values of
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X we are looking at are those X values less
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than two. So if X is less than two
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, this means that X-2 will be less than
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zero. That means The value of X-2 as
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X approaches to from the left would be a small
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negative number And so the value of X over X
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-2 would be a negative infinite number. Therefore this
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is equal to negative infinity.