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