Question

$x + \frac{1}{x} = 3 \\ x {8} + \frac{1}{x {8}^{} } = ?$

Answer 1

$\bf\huge\color{red}\mathcal{ hello\: mate!}$

$\bf\color{red}\mathfrak{thanks \:for\: asking\: this\: question !}$

$<b> here's your answer!$

answer will be 6561.

$\color{blue}{ EXPLANATION }$:-

since,

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

so,

${(x + \frac{1}{x} )}^{8}$

$= ({3})^{8}$

$= 6561 \: .....answer$

$\green{\boxed{\bold{\underline{ hope \: it \: is \: helpful}}}}$