Question

x=7-4 under root 3 then find the value of x+1/x​

Answer 1

Answer:

14

Step-by-step explanation:

x=7-4√3

1/x=1/7-4√3

Rationalising

1/x=7+4√3/(7-4√3)(7+4√3)

1/x=7+4√3/49-48

1/x=7+4√3/1

1/x=7+4√3

now,

x+1/x =7-4√3+7+4√3

=14