Question

.let solve this question for........high​

Answer 1

Step-by-step explanation:

$x - \frac{1}{x} = 3$

on squaring both sides

${(x - \frac{1}{x} )}^{2} = {3 }^{2} \\ {x}^{2} - 2 + ({ \frac{1}{x} )}^{2} = 9 \\ {x}^{2} + \frac{1}{ {x}^{2} } = 7$