if x squared plus one upon x square equals to 83 find the value of x minus one upon x
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x^2+1/x^2=83
subtracting 2 from both sides
x^2+1/x^2-2=81
(x-1/x)^2=81
x-1/x=9
subtracting 2 from both sides
x^2+1/x^2-2=81
(x-1/x)^2=81
x-1/x=9
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