Question

a = 2 + root 3 then find a-1/a​

Answer 1

Answer:

(2+√3) = a

So,

(a-1)/a

= (a/a)-(1/a)

= [(2+√3)/(2+√3)] - [1/(2+√3)]

=1 - [1/(2+√3)]

= (1-2-√3)/(2+√3)

-(1+√3)

=--------------

(2+√3)