Réponse :
Bonjour;
Explications étape par étape
1) A= -5x(-22) = 110
B = 10a-a = 9a
C= 4X 10Y = 40y
D= +3a
E= +8y²
F = 0
G = 6+2+2-2 =8
H = -6
I = 12y
H = 2t(t-5)
L = -12y
EXERCICE 4 :
A = -23+8x +2 =-21 + 8x
B = 63+5x-4+9 = 68 +5x
C = - 66+3x - 3 = -69 +3x
E = 102 +2x -4 +6 = 104 +2x
F = 92 -9 +14 = 97