Question

can anyone prove it?​

Answer 1

Answer:

1/a/1/a+1/b=b/b+a

1/a/1/a-1/b=b/b-a

b/b+a+b/b-a=b^2-ab+b^2+ab/b^2-a^2

2b^2 /b^2-a^2

Hence proved