x-1/x + 2x+1/xsquared

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1 Answer

[(x - 1) / x] + [(2x + 1) / x^2]
= [(x^2 - x) / x^2] + [(2x + 1) / x^2]
= (x^2 - x + 2x + 1) / x^2
= (x^2 + x + 1) / x^2
= 1 + (1/x) + (1/x^2)
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