How do you find AB if A=[(4,3), (7,2)] and B=[(8,5),(9,6)]? Precalculus Matrix Algebra Multiplication of Matrices 1 Answer Narad T. Nov 13, 2016 AB=((59,38),(74,47)) Explanation: A=((4,3),(7,2)) B=((8,5),(9,6)) ((a,b),(c,d))((e,f),(g,h))=((ae+bg,af+bh),(ce+dg,cf+dh)) AB=((4,3),(7,2))((8,5),(9,6))=((4*8+3*9,4*5+3*6),(7*8+2*9,7*5+2*6)) =((59,38),(74,47)) Answer link Related questions What is multiplication of matrices? How do I do multiplication of matrices? What is scalar multiplication of matrices? What are some sample matrix multiplication problems? How do I multiply the matrix ((6, 4, 24),(1, -9, 8)) by 4? How do I multiply the matrix ((3, 0, -19),(0, 7, 1), (1, 1/5, 2/3)) by -6? How do I multiply the matrix ((6, 4, 24),(1, -9, 8)) by the matrix ((1, 5, 0), (3, -6, 2))? Is matrix multiplication associative? If A=((-4, 5),(3, 2)) and B=((-6, 2), (1/2, 3/4)), what is AB? In matrix multiplication, does ABC=ACB? See all questions in Multiplication of Matrices Impact of this question 2169 views around the world You can reuse this answer Creative Commons License