Question

If x= 7+5V2 then x2 + 1/x2

.....?​

Answer 1

24.3205080757   lol

Step-by-step explanation:

Answer 2

Answer:

198

Step-by-step explanation:

a solution is attached

x     = 7+5V2  

1/x    =   1/ ( 7+5V2)

       =  7-5V2/( 49-50)

       = -7+5V2

x+ 1/x = 10V2

(x+ 1/x)^2 = 200

x2 + 1/x2+2=200

x2 + 1/x2 =198