plz solve fast with method
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X^2-1/x^2 =9
X^2 - (1/x)^2 =9
(X+1/x) (x-1/x) =9
X-1/x =9*(x+1/x)
X^2 - (1/x)^2 =9
(X+1/x) (x-1/x) =9
X-1/x =9*(x+1/x)
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