Exercice n°1:
Calculer et simplifier si possible :
35
A = 256 × 32; B = (-25) × ² × (-) ¹ ; c= = + (-¹
-1
-1
42
----- G + D
5 2
÷
3,
24
D=
+
4
2
=
5 3
14 7
Calculer et simplifier si possible :
35
A = 256 × 32; B = (-25) × ² × (-) ¹ ; c= = + (-¹
-1
-1
42
----- G + D
5 2
÷
3,
24
D=
+
4
2
=
5 3
14 7
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A=-56/25×35/42=-56/25×5/6=-56/25×1/6=-28/5×1/3=-28/15
B=-25×3/4×4/5=-25×3×1/5=-5×3=-15
C=-7/5÷2/-5=7/5×5/2=7/2
D=3/5+8/5-32/3=-127/5
E=5/14-3/7÷11/12=5/14-3/7×12/11=5/14×36/77=-17/154