| (1) | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | u | − | 5 | ) | ( | 9 | u | + | 6 | ) | − | ( | 6 | u | − | 10 | ) | ( | − | u | + | 5 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (4) | | | | | | | | | | | | | | | | | | | | | | | | | ( | x | − | 1 | ) | ( | x | + | 1 | ) | + | ( | x | − | 3 | ) | ( | x | − | 10 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (5) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 7 | x | − | 10 | ) | ( | −3 | x | − | 6 | ) | + | ( | 7 | x | + | 4 | ) | ( | 7 | x | + | 5 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | −21 | x | − | 12 | x | + | 60 | + | ( | 49 | x | + | 63 | x | + | 20 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (6) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −3 | r | − | 10 | ) | ( | −8 | r | + | 10 | ) | + | ( | −9 | r | − | 9 | ) | ( | − | r | − | 6 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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