| (1) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | 10 | q | − | 2 | ) | ( | −7 | q | + | 4 | ) | − | ( | −3 | q | − | 7 | ) | ( | 6 | q | − | 4 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | −70 | q | + | 54 | q | − | 8 | − | ( | −18 | q | − | 30 | q | + | 28 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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| (2) | | | | | | | | | | | | | | | | | | | | | | | ( | −3 | x | + | 3 | ) | ( | x | − | 2 | ) | − | 3 | ( | −10 | x | − | 9 | ) | | | | | | | | | | | | | | | | | | | | | | |
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| (3) | | | | | | | | | | | | | | | | | | | | | | | | ( | −7 | c | + | 9 | ) | ( | −7 | c | + | 7 | ) | − | 4 | ( | 3 | c | − | 2 | ) | | | | | | | | | | | | | | | | | | | | | | | |
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| (6) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ( | −10 | x | + | 3 | ) | ( | − | x | − | 5 | ) | + | ( | 10 | x | − | 6 | ) | ( | −3 | x | − | 6 | ) | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | = | 10 | x | + | 47 | x | − | 15 | + | ( | −30 | x | − | 42 | x | + | 36 | ) | | | | | | | | | | | | | | | | | | | | | | | | | |
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