Can you please solve and explain part c? The answer is zero but I don't know how exactly I can find it. I know that I need to use operations like elementary row operations on the initial matrix that we have it's determinant somehow to get the matrix in C from it. Then we should change the determinant according to the row/column operations we've done.

a b Question 5: Find the determinant of the following matrices given d e = -2 g h N. 2d - 3a 2e - 3b 2f -3c a-c 3c - 2b a/21 2a g -a 3g (a) A = 4g 4h 4i (b) B = d-f 3f - 2e d/2 (c) C = 2b h - b 3h -d -e - f g - i 3i-2h g/2 2c i-c 31