SOLUTION: If A and B are n�n matrices, then (A + B)(A � B) = A^2 � B^2.

SOLUTION: If A and B are n�n matrices, then (A + B)(A � B) = A^2 � B^2.

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Question 1101239: If A and B are n�n matrices, then (A + B)(A � B) = A^2 � B^2.
Answer by Edwin McCravy(20054) (Show Source): You can put this solution on YOUR website!


That's false.  Here's a counter-example:









  <--this does not equal to





  <-- this

So as you see, 

They are not equal.

Edwin

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