Question

if a = 4 + root3 then find a - 1/a​

Answer 1

Answer:

(4+√3)-(1/4+√3)

4+√3-[(1/4+√3)*4-√3/4-√3]

4+√3-(4-√3/16-3)

(4+√3)-(4-√3/13)

13(4+√3)-(4-√3)/13

52+13√3-4+√3/13

48+12√3/13