Evaluate:
`lim_(xrarr1) [(x-2)/(x^(2)-x)-(1)/(x^(3)-3x^(2)+2x)]`

Explanation

To evaluate the limit

\[ \lim_{x \to 1} \left( \frac{x-2}{x^2 - x} - \frac{1}{x^3 - 3x^2 + 2x} \right), \]

we will follow these steps:

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