Réponse :
Explications étape par étape
Bonjour
A = (-2)^3 + 4 x 2^4 - 3^2
A = -8 + 4 x 16 - 9
A = -8 - 9 + 64
A = -17 + 64
A = 47
B = (4 - 5^3)/(2^3 x 2 + 3 + 5^2)
B = (4 - 125) / (8 x 2 + 3 + 25)
B = (-121)/(16 + 28)
B = (-11 x 11)/(44)
B = (-11 x 11)/(11 x 4)
B = -11/4
Exercice 4 :
E = 3/7 x 5/4
E = (3 x 5)/(7 x 4)
E = 15/28
F = -8 x 9/-32
F = (-8 x 9)/(-8 x 4)
F = 9/4
G = -49/63 x 9/-28
G = -9/63 x 49/-28
G = 9/(9 x 7) x (7 x 7)/(7 x 4)
G = 1/7 x 7/4
G = 1/4 x 7/7
G = 1/4
H = 1/5 : (-3)
H = 1/5 x (-1/3)
H = -1/15
I = (-2/9)/(-5/3)
I = 2/9 x 3/5
I = 3/9 x 2/5
I = 1/3 x 2/5
I = 2/15
J = 22/7 / (-11)
J = 22/7 x -1/11
J = 22/11 x -1/7
J = (11 x 2)/11 x -1/7
J = 2 x -1/7
J = -2/7
Exercice 5 :
K = 13/7 + (-8/7 : -4/5)
K = 13/7 - 8/7 x -5/4
K = 13/7 + 8/4 x 5/7
K = 13/7 + 2 x 5/7
K = 13/7 + 10/7
K = (13 + 10)/7
K = 23/7
L = (2 - 5/8) x 3/4
L = (16/8 - 5/8) x 3/4
L = 11/8 x 3/4
L = (11 x 3)/(8 x 4)
L = 33/32
