| 101 | 15 x2 + 9y2 − 2√55 xy = 20 |
| 102 | 5 x2 + 2√3 xy+ 3 y2= 12 |
| 103 | 5 x2 + 7 y2 + 4 √6 xy = 22 |
| 104 | 3 y2 + 4 xy = 36 |
| 105 | 5 x2 + 5 y2 + 8 xy = 9 |
| 106 | 13 x2 + 27 y2 − 48 xy = 45 |
| 107 | 4 x2 + 11 y2 + 24 xy = 20 |
| 108 | 3 x2 − y2 − 2√5 xy = 8 |
| 109 | 6 x2 + 5 y2 − 4√14 xy = 26 |
| 110 | x2 + 5 y2 −2√21 xy = 24 |