| (1) | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | x | + | 10 | ) | ( | −4 | x | − | 5 | ) | + | ( | 3 | x | + | 5 | ) | ( | 9 | x | + | 8 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (2) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −10 | w | − | 9 | ) | ( | −4 | w | + | 2 | ) | + | ( | −9 | w | − | 6 | ) | ( | 7 | w | + | 10 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | 40 | w | + | 16 | w | − | 18 | + | ( | −63 | w | − | 132 | w | − | 60 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (3) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 3 | x | − | 9 | ) | ( | 7 | x | + | 6 | ) | + | ( | 6 | x | − | 6 | ) | ( | −9 | x | − | 9 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (4) | | | | | | | | | | | | | | | | | | | | | | | | | ( | x | + | 6 | ) | ( | x | − | 10 | ) | + | ( | x | + | 5 | ) | ( | x | + | 7 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (5) | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −4 | r | + | 4 | ) | ( | r | + | 3 | ) | − | ( | 9 | r | − | 8 | ) | ( | 6 | r | − | 1 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (7) | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | v | − | 9 | ) | ( | −4 | v | + | 1 | ) | + | ( | −7 | v | + | 4 | ) | ( | −4 | v | + | 9 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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