Exercices complémentaires |
Série A7) Réduis les expressions suivantes : |
| a) | a2
. 3a5 = |
3
a7 |
b) | (3a)2
= |
9a2 |
c) | (3a2)2
= |
9a4 |
d) | (–
2ab)3 = |
–
8
a3b3 |
x2
. 2x = |
2
x3 |
(–
2a)3 = |
–
8a3 |
(–
5a3)2 = |
25
a6 |
(–
3ab3)2 = |
9
a2b6 |
||||
–
5a2 . 2a5
= |
–
10 a7 |
(– 5b)2 = |
25
b2 |
(– 10a2)3 = |
–
1000 a6 |
– 4x . 5x = |
–
20 x2 |
||||
–
a . (– 5a3)
= |
5
a4 |
(– 4d)3 = |
–
64
d3 |
(– 2a4)3 = |
–
8
a12 |
x3 . (– 3x2)
= |
–
3
x5 |
||||
–
3x . 2x2 = |
–
6 x3 |
(2ab)5
= |
32
a5b5 |
(–
7x7)2 = |
49
x14 |
–
b . (– 4b2)
= |
4
b3 |