Minta tolong bantuin no 2 ya

#F

det C = (4/7 . 2/7) – (-1/7. -1/7) = (8/7) – (1/7) = 7/7 = 1

det B = (4.8 – 2. 2) = (32 – 4) = 28

Det A^t . B = (1/ det c) d(det b) = 1 (28) = 28