Step-by-step explanation:
1. The dimensions of question 1 are 2x3, 2 is 2x1, 3 is 4x2, and 4 is 1x4.
For question 5, the answer is, [tex]\left[\begin{array}{ccc}-5&17\\3&11\\\end{array}\right][/tex]
For question 6, the answer is, [tex]\left[\begin{array}{ccc}12&1&8\\\end{array}\right][/tex]
