Question

if abc=1,prove that : 1/(1+a+b^-1) +1/(1+b+c^-1) + 1/(1+c+a^-1)​

Answer 1

Answer:

it is very hard question

Answer 2

Answer:

Step-by-step explanation:

abc=1

⟹c=1/ab

1/(1+a+1/b)+1/(1+b+1/c)+1/(1+c+1/a)

=1/(1+a+1/b)+1/(1+b+ab)+1/(1+1/ab+1/a)

=b/(1+b+ab)+1/(1+b+ab)+ab/(1+b+ab)

=1+b+ab/(1+b+ab)

=1