Find the sum of the following rational expressions. \[ \frac{x+1}{(x-1)^{2}} \text { and } \frac...

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Find the sum of the following rational expressions.
\[
\frac{x+1}{(x-1)^{2}} \text { and } \frac{x-2}{x^{2}-1} \text {. }
\]
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