Chapitre 1Puissances de nombres entiers |
| a) | Calcule en respectant les règles de priorité. |
| 7
. 2 – 5 = |
 |
4
. (5 – 7) = |
|
| 3
– 5 . 3 = |
|
–
5 . (– 2 –
7) = |
|
| –
8 + 2 . (– 7) = |
|
(–
7 + 5) . (– 2 + 9)
= |
|
| –
1 – 3 . (–
4) = |
|
(–
5 + 2)2 = |
|
| 7
– (– 2) . (–
7) = |
|
(3
– 5)3 = |
|
|
4 + 5 . (– 3)2
= |
|
|
–2 + 3 . (–
2)3 = |
|
|
5 . (– 2)4
– 2 . (– 3)3
= |
|
| 3
. (– 5)2
– (– 4)2 .
3 = |
|
|
(– 3 + 5) . (–
2)3 = |
|
|
3 . (2 – 5)3
= |
|
|
(2 – 8)2 .
(– 6 + 7)2 = |
|
|
(– 5 + 3) . (–
6 + 2)3 = |
|
|
5 – 3 . (6 –
2)3 = |
|
|
5 . (– 3) –
6 . 23 = |
|
| b) | Calcule la valeur numérique des expressions suivantes sachant que :
|
|
5b3 =
|
..........
|
|
– 4a5
=
|
..........
|
|
|
7d2
=
|
..........
|
|
2d3
=
|
..........
|
|
|
– 5c3
=
|
..........
|
|
– 10b4
=
|
..........
|
|
|
– 2c2
=
|
..........
|
|
10b5
=
|
..........
|
|
|
5a3
– 7b2 =
|
..........
|
|
|||
|
6b2
– 4a5 =
|
..........
|
|
|||
|
3d2 + 5b3 =
|
..........
|
|
|||
|
a7
– 4b3 =
|
..........
|
|
|||
|
3c2
+ 3a3 =
|
..........
|
|
|||
|
b2 – 3b + 7 =
|
..........
|
|
|||
|
2b3
– 5b2 + b – 1 =
|
..........
|
|
|||
|
–
2d2 + 5d + 1 =
|
..........
|
|
|||
|
a3
– 5a2 + 2a – 5 =
|
..........
|
|
Vos
remarques sont les bienvenues.
