if
[tex]a = 5 - 2 \sqrt{6} [/tex]
, then find the value of :
(I)
[tex] \sqrt{a} \: - \frac{1}{ \sqrt{a} } [/tex]
(ii)
[tex] {a}^{2} + \frac{1}{ {a}^{2} } [/tex]
plz post the correct answer​