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Consider the following in respect of mat...

Consider the following in respect of matrices A and B of same order:
I. `A^(2)-B^(2)=(A+B)(A-B)`
II. `(A-I) (I+A)=0 rArr A^(2) =I`
Where I is the identity matrix and O is the null matrix.
Which of the above is/are correct ?

A

A. I Only

B

B. 2 Only

C

C. Both I and II

D

D. Neither I nor II

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