Answer:
z - x.
Step-by-step explanation:
| 0 0 x-z |
| 0 1 y+z | = 0 |1 y+z| + 0 | 0 y+z| + x-z | 0 1 |
| 1 z z^2 | ||1 z^2| | 1 z^2 | | 1 z |
= 0 + 0 + (x - z)(0*z - 1*1)
= -(x - z)
= z - x
