Question

If x= 3+ ✓8 find the value of x square +1/ x square

Answer 1

x= 3+ ✓8
1/x= 1/3+ ✓8= 3-√8
x+1/x = 6
squaring both side
x^2 +1/x^2 +2 =36
x^2 +1/x^2 = 34

Answer 2

By using above steps, it can be solved by shown way.