Question

x=7-4√3 then x+1/x=?​

Answer 1

Answer:

on rationalization

x=7+4√3 =x+1/x

=> 1. × 7-4√3

7+4√3 7-4√3

= 7-4√3

49-48

=1/x = 7-4√4/1

=7+4√3 + 7-4√3/1

=(4-√3 5-√3) [cancel out)

• remaining 7+7
• x+1/x = 14 answer
• hope it helps a lot.