Question

if a=2+√3, a-1/a=?????????????????​

Answer 1

Answer:

7

Step-by-step explanation:

a=2+√3

so, a-1/a

= 2+√3 - 1/2+√3

= {(2+√3)(2+√3) - 1}/2+√3

= (4+3-4√3-1)/2+√3

= (7-1+4√3)/2+√3

= (6+4√3)/2+√3

= {(2+√3)(4+3)}/2+√3

= 7

may it will help you.

Thank you