Answer:
Step-by-step explanation:
A×B={(a , x) ,( a , y), (a , z), (b ,x) ,(b ,y) ,(b ,z)}
B × B= {(x , x), (x ,y ), (x, z),(y ,x ),(y, y), (y, z),( z ,x ),( z, y),( z ,z)}
A×A={ (a, a), (a, b),( b, a) ,(b ,b )}
B×A= { (x ,a) ,(x, b),( y , a) ,(y , b) ,(z ,a), (z ,b ) }
