BONJOUR,AIDEZ MOI SVP: I) Sachant que x = 8 ; y = 5 et z = 1 calculer :
A = 5 x + 3
B = 5 x × 3
C = 5 (x + 3)
D = (5 + x) × 37
E = 2 x − 3 y + 2 z
F = 6 x + 2 y − 4 z
G = 8 x + 3 − 3 y
H = x + y (3 x − 2 y)
exercice n°2:
calculer astucieusement:
A = 45 × 99
B = 2,7 × 3,6 + 2,7 × 6,4
C = 18 × 101
D = 57 × 0,82 + 0,82 × 43
E = 34 × 45 + 64 × 45 – 45 × 8
F = 12 × 9,9
G = 7,53 × 3,26 + 6,74 × 7,53
H = 456,7 × 1001
I = 12 × 199
J = 21 × 65,7 + 9 × 65,7 + 30 × 34,3
K = 265 × 102
A = 5 x + 3
B = 5 x × 3
C = 5 (x + 3)
D = (5 + x) × 37
E = 2 x − 3 y + 2 z
F = 6 x + 2 y − 4 z
G = 8 x + 3 − 3 y
H = x + y (3 x − 2 y)
exercice n°2:
calculer astucieusement:
A = 45 × 99
B = 2,7 × 3,6 + 2,7 × 6,4
C = 18 × 101
D = 57 × 0,82 + 0,82 × 43
E = 34 × 45 + 64 × 45 – 45 × 8
F = 12 × 9,9
G = 7,53 × 3,26 + 6,74 × 7,53
H = 456,7 × 1001
I = 12 × 199
J = 21 × 65,7 + 9 × 65,7 + 30 × 34,3
K = 265 × 102
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