Difference between revisions of "1991 AHSME Problems/Problem 27"
(Created page with "If <math>x+\sqrt{x^2-1}+\frac{1}{x-\sqrt{x^2-1}}=20</math> then <math>x^2+\sqrt{x^4-1}+\frac{1}{x^2+\sqrt{x^4-1}}=</math> (A) <math>5.05</math> (B) <math>20</math> (C) <math>51....") |
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Revision as of 00:20, 17 March 2013
If 
then 
(A) 
(B) 
(C) 
(D) 
(E) 
