माना आव्यूह (Matrices)- A = 2 1 2 −1 , B = 1 1 यदि (A + B) (A – B) = A2 – B2 हो तो-

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माना आव्यूह (Matrices)- A = 2 1 2 −1 , B = 1 1 यदि (A + B) (A – B) = A<sub>2</sub> – B<sub>2</sub> हो तो-