Question

1) If A = 2 3 4 , B = 2 0 -3 and C = 5 6 7
0 -2 1 4 0 -1 -1 2 3
3 -1 2 3 4 5 4 -5 4
prove that A(BC) = (AB) C. ​

Answer 1

Answer:

A(BC) = (AB) C

2 3 4(20-3 5 6 7) = (2 3 4 20-3) 5 6 7

9×35 = 9+17×18

315 = 315

proved.