Which coefficient matrix represents a system of linear equations that has a unique solution?
O A
О в.
0 с.
O D.
4 2
2
-2
5
4
-1 -2
69
1 3
3-4
-2
10 5
1 4
-1]
0 -27
6
0
-2
2
0
-27
-7
1
5
4 -2 0