| (1) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −5 | v | + | 10 | ) | ( | 5 | v | − | 3 | ) | − | ( | 6 | v | − | 9 | ) | ( | 6 | v | + | 2 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | −25 | v | + | 65 | v | − | 30 | − | ( | 36 | v | − | 42 | v | − | 18 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
|
| (2) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −7 | y | − | 8 | ) | ( | 8 | y | + | 5 | ) | − | ( | 8 | y | + | 4 | ) | ( | −2 | y | + | 10 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | −56 | y | − | 99 | y | − | 40 | − | ( | −16 | y | + | 72 | y | + | 40 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
|
| (3) | | | | | | | | | | | | | | | | | | | | | | | | | ( | r | − | 2 | ) | ( | r | + | 3 | ) | − | ( | r | + | 2 | ) | ( | r | − | 10 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
|
|
|
| (5) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 2 | v | + | 8 | ) | ( | −7 | v | − | 7 | ) | + | ( | 2 | v | − | 1 | ) | ( | 3 | v | − | 4 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
|
| (6) | | | | | | | | | | | | | | | | | | | | | | | | ( | −3 | z | + | 7 | ) | ( | −9 | z | + | 3 | ) | − | 2 | ( | −6 | z | + | 3 | ) | | | | | | | | | | | | | | | | | | | | | | | |
|
|
|