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Question
If A and B are square matrices of the same order, then (A + B)(A − B) is equal to
Options
A2 − B2
A2 − BA − AB − B2
A2 − B2 + BA − AB
A2 − BA + B2 + AB
Solution
(A + B)(A − B) = A2 − AB + BA − B2
Hence, the correct option is (c).
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