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Mrsbisgaard Com Get 1on1 help from an The question gives you x (1/x)=5 and it is asking for x^2 (1/x^2) well, remember (ab)^2=a^22abb^2 Let's square the question given, that gives you x^22*x* (1/x) (1/x^2)=25 since 2*x* (1/x)=2,then x^2 (1/x^2)=252=23 answer by anonymous 2(x-1/x)^2-5(x 1/x 2) 18=0