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| (2) | | | | | | | | | | | | | | | | | | | | | | | | | ( | r | + | 7 | ) | ( | r | − | 7 | ) | − | ( | r | + | 8 | ) | ( | r | − | 8 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (3) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −5 | v | + | 8 | ) | ( | 3 | v | + | 7 | ) | − | ( | −8 | v | + | 9 | ) | ( | 7 | v | − | 10 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | −15 | v | − | 11 | v | + | 56 | − | ( | −56 | v | + | 143 | v | − | 90 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (6) | | | | | | | | | | | | | | | | | | | | | | | | | ( | b | + | 2 | ) | ( | b | + | 10 | ) | + | ( | b | − | 3 | ) | ( | b | + | 10 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (7) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 5 | v | − | 10 | ) | ( | −2 | v | − | 5 | ) | − | ( | 2 | v | − | 7 | ) | ( | −4 | v | − | 4 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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