| (1) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −8 | b | + | 2 | ) | ( | 6 | b | − | 7 | ) | − | ( | −9 | b | + | 10 | ) | ( | 2 | b | + | 5 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | −48 | b | + | 68 | b | − | 14 | − | ( | −18 | b | − | 25 | b | + | 50 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (3) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 5 | x | + | 3 | ) | ( | 6 | x | − | 6 | ) | + | ( | 4 | x | − | 6 | ) | ( | −10 | x | + | 1 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (4) | | | | | | | | | | | | | | | | | | | | | | | | | ( | w | − | 6 | ) | ( | w | − | 4 | ) | + | ( | w | + | 9 | ) | ( | w | − | 9 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (5) | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | b | − | 6 | ) | ( | −9 | b | + | 6 | ) | − | ( | 8 | b | − | 3 | ) | ( | 4 | b | + | 9 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (6) | | | | | | | | | | | | | | | | | | | | | | | | ( | 4 | v | − | 7 | ) | ( | −10 | v | + | 2 | ) | − | 6 | ( | 4 | v | − | 5 | ) | | | | | | | | | | | | | | | | | | | | | | | |
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| (7) | | | | | | | | | | | | | | | | | | | | | | | | ( | −6 | c | + | 9 | ) | ( | −4 | c | − | 8 | ) | − | 5 | ( | 3 | c | − | 2 | ) | | | | | | | | | | | | | | | | | | | | | | | |
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