Multiplication of two matrices possible if the number of columns in the
\first matrix equals the number of rows in the second matrix.
\Let A be the first matrix and B be the second matrix.
\The dimensions of the matrix A are and the number of columns in
the matrix A is 2.
\The dimensions of the matrix B are and the number of the rows in the matrix B is 2.
The number of columns in the matrix A is not equals the number
\of rows in the matrix B.
\So, matrix product AB is impossible.
\The matrix product AB is impossible.