bonsoir
2 ( 3 + √5 ) = 6 + 2 √5
3 ( 6 - √2) = 18 - 3 √2
5 ( 3 √2 + 4 ) = 15 √2 + 20
- 3 ( 5 √3 - 7 ) = - 15 √3 + 21
√3 ( 4 + √3) = 4 √3 + 3
3 √2 ( 4 + √2) = 12 √2 + 6
2 √3 ( 5 - 2 √3) = 10 √3 - 12
- 2 √5 ( 3 √5 + 2 ) = - 6 √25 + 4 √5 = - 30 + 4 √5
5 √7 ( - 4 + 3 √7) = - 20 √7 + 15 √49 = - 20 √7 + 105
- 9 √11 ( - 2 √11 - 6 ) = 18 √121 + 54√11 = 198 + 54 √11
