| (1) | | | | | | | | | | | | | | | | | | | | | | | | | ( | y | + | 2 | ) | ( | y | − | 2 | ) | − | ( | y | + | 10 | ) | ( | y | + | 2 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (2) | | | | | | | | | | | | | | | | | | | | | | | | | ( | u | + | 5 | ) | ( | u | − | 1 | ) | − | ( | u | − | 4 | ) | ( | u | + | 4 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (3) | | | | | | | | | | | | | | | | | | | | | | | | | ( | w | − | 4 | ) | ( | w | + | 4 | ) | + | ( | w | + | 10 | ) | ( | w | + | 2 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (4) | | | | | | | | | | | | | | | | | | | | | | | | | ( | r | + | 7 | ) | ( | r | − | 7 | ) | − | ( | r | − | 8 | ) | ( | r | − | 3 | ) | | | | | | | | | | | | | | | | | | | | | | | | |
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| (5) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −4 | x | − | 4 | ) | ( | −10 | x | − | 10 | ) | + | ( | 6 | x | − | 5 | ) | ( | −8 | x | − | 10 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | 40 | x | + | 80 | x | + | 40 | + | ( | −48 | x | − | 20 | x | + | 50 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (6) | | | | | | | | | | | | | | | | | | | | | | | | ( | 5 | v | + | 1 | ) | ( | 3 | v | + | 10 | ) | − | 7 | ( | −5 | v | + | 6 | ) | | | | | | | | | | | | | | | | | | | | | | | |
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| (7) | | | | | | | | | | | | | | | | | | | | | | | | ( | 7 | a | + | 10 | ) | ( | 2 | a | − | 10 | ) | − | 5 | ( | 10 | a | + | 4 | ) | | | | | | | | | | | | | | | | | | | | | | | |
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