Réponse :
Explications étape par étape
Bonsoir
Calculer Et Simplifier :
A = -2/3 + 2/3 x 5/7 x (1 - 21/2)
A = -2/3 + 10/21 x (2/2 - 21/2)
A = -2/3 + 10/21 x (-19/2)
A = -2/3 - 10/2 x 19/21
A = -2/3 - 5 x 19/21
A = -14/21 - 95/21
A = -109/21
B = (3/2 - 1/7) / [4/5 - 5/2(4/3 - (-1/2))]
B = (21/14 - 2/14) / (4/5 - 5/2(8/6 + 3/6))
B = (19/14) / (4/5 - 5/2 x 11/6)
B = (19/14) / (48/60 - 55/12)
B = (19/14) / (-7/12)
B = 19/14 x -12/7
B = -12/14 x 19/7
B = -6/7 x 19/7
B = -114/49
C = (3/4)^(-4) x (2 x 3^(-1))^(-4)
C = 4^4/3^4 x 2^(-4) x 3^(4)
C = (2^2)^4 x 2^(-4)
C = 2^8 x 2^(-4)
C = 2^(8-4)
C = 2^4
D = (2/3)^(-2) + [(1/3)^(-1) + (1/2)^(-2)]^(-1)
D = 3^2/2^2 + (3 + 2^2)^(-1)
D = 3^2/2^2 + 3^(-1) + 2^(-2)
D = 3^(2-1) + 2^(-2-2)
D = 3^1 + 2^(-4)
D = 3 + 2^(-4)
D = 3 + 1/(2^4)
D = 3 + 1/16
D = 48/16 + 1/16
D = 49/16
D = 7^2/4^2
D = (7/4)^2
