SOLVED:Perform the indicated block multiplication of matrices A and B. If matrices A and B have each been partitioned into four submatrices A=[ A11 A12 A21 A22 ] and B=[ B11 B12 B21 B22 ] then you can block multiply A and B, provided the sizes of the submatrices are such that the matrix multiplications and additions are defined. A B =[ A11 A12 A21 A22 ][ B11 B12 B21 B22 ] =[ A11 B11+A12 B21 A11 B12+A12 B22 A21 B11+A22 B2

Multiplying a Linear Monomial | Algebra | Study.com