Réponse :

Explications étape par étape

Bonjour

b) F = 3/(V5 - 2)

F = 3(V5 + 2)/[(V5 + 2)(V5 - 2)]

F = (3V5 + 6)/(5 - 2^2)

F = (3V5 + 6)/(5 - 4)

F = 3V5 + 6

G = x / (4 - V7)

G = x(4 + V7)/[(4 - V7)(4 + V7)

G = x(4 + V7)/(4^2 - 7)

G = x(4 + V7)/(16 - 7)

G = (4x + xV7)/9

Exercice 4 :

H = 3 - (3/56 - 3/24)

H = 3 - (3/56 - 1/8)

H = 3 - (3/56 - 7/56)

H = 3 + 4/56

H = 3 + 1/14

H = 42/14 + 1/14

H = 43/14

I = 1/(4/14 + 2/8)

I = 1/(2/7 + 1/4)

I = 1/(8/28 + 7/28)

I = 1/(15/28)

I = 1 x 28/15

I = 28/15

J = (3/2 - 5/3)/(-3/7 + 1)

J = (9/6 - 10/6)/(-3/7 + 7/7)

J = (-1/6)/(4/7)

J = -1/6 x 7/4

J = -7/24