If 1/x is added with 1/ x^2-1 what is the result?

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• A (x^2+x-1) / (x^3-x)
• B x^2+x-1
• C x^3-x
• D x-1

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Answer: A. (x^2+x-1) / (x^3-x)

When 1/x is added with 1/ x^2-1 the result is x^2+x-1 / x^3-x

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