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If A and B are square matrices of the...

If `A` and `B` are square matrices of the same order, explain, why in general `(A+B)^2!=A^2+2A B+B^2` (ii) `(A-B)^2!=A^2-2A B+B^2` (iii) `(A+B)(A-B)!=A^2-B^2` .

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RD SHARMA ENGLISH-ALGEBRA OF MATRICES-All Questions
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