Question

this one also
please​

Answer 1

Step-by-step explanation:

x^2+1/x^2=(3+√8)^2+{1/(3+√8)^2}

={3^2+(√8)^2+2×3×√8}+1/(3^2+√8^2+2×3×√8)

=(9+8+6√8)+1/(9+8+6√8)

=(17+6√8)+1/(17+6√8)

{17+6√8}^2+1

= -------------------

17+6√8