| d) | Réduis les produits suivants. |
a
. b = |
ab |
(–
2) . a = |
–
2a |
2a
. b = |
2ab |
(–
a) . b = |
–
ab |
(–
2) . (– b) = |
2b |
2a
. (– 3b) = |
–
6ab |
(–
a) . (– b) = |
ab |
(–
a) . (+2) = |
–
2a |
–
a . (– 2b) = |
2ab |
a
. (– b) = |
–
ab |
–
a . 5 = |
–
5a |
–
4a . 2b = |
–
8ab |
4
. 2b = |
8b |
(–
a) . (– 3) = |
3a |
–
2a . 2b = |
–
4ab |