Question 1206237
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Show that (AxB).(AxB) + (A.B)^2 =(A^2)(B^2)
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I don't know what do you want and what do you mean.


But over the set of all real numbers this identity is incorrect / invalid.



For example, take A= 1, B= 1 to get contradiction..



Over the set of all square matrices, this identity is not valid, too.


To get and example, consider identity matrices.