| (1) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 2 | v | − | 6 | ) | ( | 6 | v | + | 6 | ) | − | ( | 7 | v | + | 4 | ) | ( | −9 | v | − | 9 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | 12 | v | − | 24 | v | − | 36 | − | ( | −63 | v | − | 99 | v | − | 36 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (2) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 7 | x | − | 3 | ) | ( | −10 | x | − | 9 | ) | − | ( | −4 | x | − | 3 | ) | ( | − | x | − | 4 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (3) | | | | | | | | | | | | | | | | | | | | | | | | | ( | w | − | 2 | ) | ( | w | − | 5 | ) | + | ( | w | + | 7 | ) | ( | w | − | 9 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (5) | | | | | | | | | | | | | | | | | | | | | | | | | ( | r | + | 8 | ) | ( | r | − | 10 | ) | − | ( | r | − | 6 | ) | ( | r | − | 2 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (7) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 5 | c | + | 3 | ) | ( | 7 | c | + | 8 | ) | − | ( | 7 | c | − | 3 | ) | ( | − | c | + | 6 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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