Réponse :
Bonjour
Explications étape par étape
A = 5/3 + 2/3 + (2/9 - 2/3)
A = 7/3 + (2/9 - (2*3)/(3*3))
A = 7/3 + (2/9 - 6/9)
A = 7/3 + (-4/9)
A = 7/3 - 4/9
A = (7*3)/(3*3) - 4/9
A = 21/9 - 4/9
A = 17/9
B = 3*10^-5*(2*10^-3)^2/15*10^5
B = 3*10^-5*2^(2*2)*10^(-3*2)/15*10^5
B = 3*10^-5*4*10^-6/15*10^5
B = (3*16)/15 * (10^-5*10^-6)/10^5
B = 48/15 * 10^(-5+(-6))/10^5
B = 3.2 * 10^-11/10^5
B = 3.2 * 10^(-11-5)
B = 3.2 * 10^-16
C = 2^3 - 3 * (17 - 2*3^2)^2
C = 8 - 3 * ( 17 - 2 * 9)^2
C = 8 - 3 * (17 - 18)^2
C = 8 - 3 * (-1)^2
C = 8 - 3 * 1
C = 8 - 3
C = 5
