Answer:
Answer is [6 18]
Step-by-step explanation:
4 x 2 = -8
2 x 7 = 14
-8 + 14 = 6, which will become the first element in our answer matrix
4 x 5 = 20
2 x -1 = -2
20 - 2 = 18, which will become the second element in our answer matrix
thus the answer is [6 18]