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প্রমাণ কর যে, ( left [ begin matrix 1 + a^ 2 - b^ 2 & 2 a b & 2 b 2 a b & 1 - a^ 2 + b^ 2 & - 2 a - 2 b & 2 a & 1 - a^ 2 - b^ 2 end matrix right ] )= ( left(1+a^ 2 +b^ 2 right)^ 3 | Suva Ai