If `A = [(1,2),(3,2),(-1,0)]and B = [(1,3,2),(4,-1,3)]` then find the order of `quad AB`

If A = [(1,2),(5,7)]and B = [(2,1),(3,4)] then find the order of AB.

if A=[{:(4,2),(-3,2),(1,3):}]and B=[{:(-1,3),(0,2),(2,-4):}], then find 3A-4B.

if 2A +B=[{:(5,-1),(3,2):}]and A-2B =[{:(1,-4),(0,5):}] then find the matrices A and B .

if 2A -3B =[{:(4,2),(-1,0),(3,-2):}]and 3A+B=[{:(1,0),(3,5),(-1,4):}] , then find the matrices A And B,

if A=[{:(1,2,-5),(-3,4,6):}]and B[{:(-2,3,-4),(1,2,3):}]' then find 2A+B.

if A=[{:(4,0,-3),(1,2,0):}]and B=[{:(2,1),(1,-2),(3,4):}]' then find AB and BA.

if A=[{:(1,2,3),(4,5,6):}]and B=[{:(-3,-2),(0,1),(-4,-5):}], then find AB and BA ,

If A'=[(-2,3),(1,3)] and B=[(-1,0),(1,2)], find [A+2B]'.

If A = [{:(0,1,2),(1,2,3),(2,3,4):}] and B=[{:(1,-2),(-1,0),(2,-1):}] obtain the product AB and explain why BA is not defined?