Answer:
[tex]\frac{x+1}{x^2+x+1}[/tex]
Solution:
[tex]\frac{x^2-1}{x^3-1}[/tex]
Factor the expressions that are not already factored
[tex]\frac{(x-1)(x+1)}{(x-1)(x^2+x+1)}[/tex]
Cancel out x - 1
Therefore the answer is [tex]\frac{x+1}{x^2+x+1}[/tex]
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