Réponse :
Explications étape par étape
Bonjour
Exercice 52 :
C)
T = 4/x - 1/(3x + 5)
T = [4(3x + 5) - x]/[x(3x + 5)]
T = (12x + 20 - x)/[x(3x + 5)]
T = (11x + 20)/[x(3x + 5)]
D)
E = 1/(1 - 5x) + 2/(x + 1)
E = [(x + 1) + 2(1 - 5x)]/[(1 - 5x)(x + 1)]
E = (x + 1 + 2 - 10x)/[(1 - 5x)(x + 1)]
E = (-9x + 3)/[(1 - 5x)(x + 1)]
E = 3(-3x + 1)/[(1 - 5x)(x + 1)]
