Question

if abc=1;show that 1/1 +a +b power -1 +1/1 +b +c power -1+1/1+c+a power -1 =1

Answer 1

if the power of 1/1+a+b will become 0 then it is equal to 1
let us check
-1+1/1+b+c=0/1+b+c=0
0 power anything is zero so the answer is 1

Answer 2

have a look on attachments