Question

answer 6th questions ​

Answer 1

Answer:

Step-by-step explanation:

$\\ \\ {x}^{2} + \frac {1}{{x}^{2}} = 23 \\ \\ {x}^{2} + \frac {1}{{x}^{2}} + 2 \times x \times \frac {1}{x} = 23 + 2 \times x \times \frac {1}{x} \\ \\ {(x+ \frac {1}{x})}^{2} = 25 \\ \\ x + \frac {1}{x} = \sqrt{25} = 5$