| f) | Calcule la valeur numérique des expressions suivantes si tu sais que : |
2a
+ 3a = |
5a |
2a
. (– 3b) = |
–
6ab |
2a
. 7a . 5a = |
70
a3 |
5a
. 3a = |
15a2 |
3b
– 2c = |
3b
– 2c |
2a
+ 3a + 5a = |
10a |
4a
– 6a = |
–
2a |
–
a + 3a = |
2a |
–
4b . (– 2b) . b = |
8b3 |
–
2a – a = |
–
3a |
3a
. (– a) = |
–
3a2 |
–
3b + 2b – 5b = |
–
6b |
–
2a . a = |
–
2a2 |
3b
. (– 2c) = |
–
6bc |
(–
3b) . (– 2b) . (– 5b) = |
–
30b3 |