If A and B be square matrices of the same order such that AB=BA, prove that : (A+B)(A-B)=A^2...

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If A and B be square matrices of the same order such that AB=BA, prove that : (A+B)(A-B)=A^2...

If A and B be square matrices of the same order such that AB=BA, prove that : (A+B)(A-B)=A^2...