Question 1206237: Show that (AxB).(AxB) + (A.B)^2 =(A^2)(B^2)
Answer by ikleyn(52781) (Show Source):
You can put this solution on YOUR website! .
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.
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