Perform the following operations on the given matrices: 
Definitions:
Blood Urea Nitrogen
A measure of the amount of urea nitrogen, a waste product from the breakdown of protein, in the blood, which can indicate kidney function.
Kidney Function
The capabilities and efficiency of the kidneys, particularly in filtering waste products from the blood and excreting them as urine.
Mean Corpuscular Hemoglobin
A measurement of the average amount of hemoglobin contained within a single red blood cell, used in diagnosing anemia.
Mean Corpuscular Volume
A measure of the average volume of a red blood cell, used in diagnosing and classifying anemias.
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