bhattanjali9107 bhattanjali9107 10-05-2024 Science Answered 4. सिद्ध कीजिए (a ^ - 1)/(a ^ - 1 + b ^ - 1) + (a ^ - 1)/(a ^ - 1 - b ^ - 1) = (2b ^ 2)/(b ^ 2 - a ^ 2)