Question

if x+1/x=11 then find the value of x^2+1/x^2

Answer 1

hey your ans is here

------
given
x+1/x=11

to find
x2+1/x2

apply the identity
(x+1/x)2=x2+1/x2+2

so
(11)2=x2+1/x2+2
121=x2+1/x2+2
119=x2+1/x2
--------
:-)

Answer 2

here's an attachment , plz open it.