Question

plz answer this in detail plzz ​

Answer 1

here's your answer it may help you

Answer 2

$x = 2 - \sqrt{3} \\ \frac{1}{x} = \frac{1}{2 - \sqrt{3} } \times \frac{2 + \sqrt{3} }{2 + \sqrt{3} } \\ \frac{1}{x} = \frac{2 + \sqrt{3} }{ {2}^{2} - {( \sqrt{3}) }^{2} } \\ \frac{1}{x} = \frac{2 + \sqrt{3} }{4 - 3} \\ \frac{1}{x} = 2 + \sqrt{3} \\ - \frac{1}{x} = - 2 - \sqrt{3}$

Again

${(x - \frac{1}{x} )}^{3} \\ {(2 - \sqrt{3} - 2 - \sqrt{3 } )}^{3} \\ {( - 2 \sqrt{3} )}^{3} \\ - 8.3 \sqrt{3} \\ - 24 \sqrt{3}$