Question

plz answer the quartion plz asap plz

Answer 1

$(x - \frac{1}{x} ) {}^{2} = x {}^{2} + \frac{1}{x {}^{2} } - 2(x)( \frac{1}{x} ) \\ (x - \frac{1}{x} ) {}^{2} = 83 - 1 \\ (x - \frac{1}{x} ) {}^{2} =82 \\ (x - \frac{1}{x} ) = \sqrt{82}$