Question

If x=2+root 2 find the value of x square +1/xsquare

Answer 1

Answer:

1.6

Step-by-step explanation:

x2+1/x2

(2+root2)2+1/(2+root2)2

6+2root2+1/6+2root2

7+2root2/6+2root2

7+2*1.414/6+2*1.414

9.828/8.828

which comes to 1.6 approximately