Exercices complémentaires |
Série A8)
Réduis les expressions suivantes. |
| a) | 4a3
. (– 4a3)
= |
– 16a6 | b) | 4a
. 3 = |
12a |
a
. (– 3a) = |
– 3a2 | (–
4a)3 = |
– 64a3 | ||
(–
3ab3)3= |
– 27a3b9 |
(– 4 + a) . 3 = |
– 12 + 3a | ||
–
4a . (– 5a) = |
20a2 |
– 4 + a = |
– 4 + a | ||
–
3 . (ab3)3
= |
– 3a3b9 | –
4a + 3a = |
– a |
| c) | 3x2
+ 5x = |
3x2 + 5x | d) | (–
3ab)2 = |
9a2b2 |
3x2
. 5x = |
15x3 | –
3 . (a + 2b) = |
– 3a – 6b | ||
(3x)2 . 5x = |
45x3 |
3 – (a + 2b) = |
3 – a – 2b | ||
(3 + x2) . 5x = |
15x + 5x3 |
– 3 . (2ab)2
= |
– 6a2b2 | ||
(–
3x2) . 5x = |
– 15x3 | (3
– a) . 2b = |
6b – 2ab |