Question

If x=(3+√8) than x^2+1/x^2​

Answer 1

Answer:

if x =

$3 + \sqrt{8}$

then 1/x=

$3 - \sqrt{8}$

x square =

$17 + 6 \sqrt{8}$

1/x square

$17 - 6 \sqrt{8}$

then x square +1/x square

$17 + 6 \sqrt{8} + 17 - 6 \sqrt{8} = 34$

hence answer is 34