Question

solve this fastly ......​

Answer 1

Answer:

Step-by-step explanation:

Given=7+4√3

x²=(7+4√3)²

rationalize  x=7+4 root 3

x=7+4√3*(7-4√3/7-4√3)

x=1/7-4√3

1/x=7-4√3

1/x²= (7-4√3)^2

x²+1/x²= 49+56 root 3+48+49-56 root 3+48

= 97+97

=194

mark answer brainliest