If ` A=[[a,b],[-b,a]], B= [[-a, b],[-b, -a]] ` then find A+B

If A=[[a,b] , [c,d]] and B=[[a',b] , [c',d']] then find the value of A-B

Find the product of [[a,-b],[b,a]]*[[a,b],[-b,a]]

If A = [ (a , b) , (-b , a)] and B = [ (a , b),(b , a)] , find AB .

If A = (a + b , a-b) and B (-a + b, -a-b), then find the distance AB .

If A = {a,e,i,o,u}, B= {a,b,c} then find A∪B and A∩B ?

If A= {:((3a,2b),(-a,b)):}and B = {:((-a,b),(2a,2b)):} , then find a matrix X such that XA = B.

If three vertices of a parallelogram are (a+b,a-b),(2a+b,2a-b),(a-b,a+b) then find the fourth vertix

If a/b =7/3 , then find (a+b)/(a-b)

Three vertices of a parallelogram are (a + b ,a - b ) , (2a + b, 2a - b), and (a - b, a + b) . Find the 4th vertex.