Réponse :
Explications étape par étape :
A=3 (x +2)
A=3×x+3×2
A=3x+6
B = (-7) (6-2t)
B = (-7)×6 - (-7)×(2t)
B = (-42) - (-14t) = (-42) +14t
C = 5 (4a - 2)
C = 5 × 4a - 5×2
C = 20a - 10
D = Z (22 - 4)
D = Z × 22 - Z × 4
D = 22Z - 4Z
D = 18Z
E = 7t (5 -2t)
E = 7t × 5 - 7t × 2t
E = 35t - 14t²
F = a (2-a)
F = a × 2 - a×a
F = 2a - a²
G = 5t (4 + 2t)
G = 5t × 4 + 5t × 2t
G = 20t + 10t²
H = 5 (3-2w)
H = 5 × 3- 5×2w
H = 15 - 10w
I = (-2t) (4 – 5t)
I = (-2t) × 4 – (-2t) ×5t
I = (-8t) - (-10t)² = (-8t) + 10t²
J = 7a (9-8a)
J = 7a × 9- 7a×8a
J = 63a - 56a²
K = -6 (3 +4a)
K = -6×3 + (-6)×4a
K = -18 + (-24a) = -18 - 24a