Réponse :
Bonsoir,
Exo 24 :
A = 3(5-4X) = 15 - 12 X
B = -2 (3Y - 8) = -6Y + 16
C = -4 (A+4) = -4A - 16
D = X(3-X) = 3X -X²
E = T (2T+5) = 2T² + 5T
F = 3Y(Y-2) = 3Y² -6Y
Exo 25 :
G = (X+7) (X+3) = X² + 3X +7X + 21 = X² + 10X +21
H = (X-5) (X+2) = X² + 2X -5X -10 = X² -3X -10
I = (2X+1) (X-4) = 2X² - 8X + X -4 = 2X² -7X -4
J = (X-3) (3X-2) = 3X² -2X -9X +6 = 3X² -11X +6
