Question

find the value pls solve it​

Answer 1

Step-by-step explanation:

$(x - \frac{1}{x} ) {}^{2} = {x}^{2} + \frac{1}{ {x}^{2} } - 2 \times x \times \frac{1}{x} \\ (x - \frac{1}{x}) {}^{2} = {x}^{2} + \frac{1}{ {x}^{2} } - 2 \\ (x - \frac{1}{x} ) {}^{2} = 83 - 2 \\ (x - \frac{1}{x} ) {}^{2} = 81 \\ (x - \frac{1}{x} ) = \sqrt{81} = 9$