Question

Please answer this question ​

Answer 1

Step-by-step explanation:

given

$x = 2 + \sqrt{3}$

squaring both sides

$x {}^{2} = {(3 + 2)}^{2} \\ x {}^{2} = 25$

put in equation

${x}^{2} + \frac{1}{x {}^{2} } \\ 25 + \frac{1}{25 } \\ \frac{625 + 1}{25} \\ \frac{626 }{25 } \\ 25.004$