What is the difference between the given matrices? the 2 by 2 matrix, row 1, column 1, negative 4 column 2, 8 row 2, column 1, 3 column 2, 12 minus the 2 by 2 matrix, row 1, column 1, 2 column 2, 1 row 2, column 1, negative 14 column 2, 15 is equal to