Réponse :
bonsoir
Explications étape par étape :
Q22
A = x × 12
A = 12x
B = 1 × y
B = y
C = 0 × x
C = 0
D = 2y × 7
D = 14y
E = 2 × x × 3x
E = 2x × 3x
E = 6x²
F = y x 4 × ( 2 × y - 1)
F = 4y × ( 2y - 1)
F = 8y² - 4y
-------------------------------------------------------
Q 15
a )
→ 6 ( 3a + 2)
→ 18a + 12
b)
→ (5 - b) × a
→ 5a - ab
c)
→ a ( 1 + a)
→ a + a²
-------------------------------------------
Q 24
A = x × ( -9 ) × 2
A = -9x × 2
A = -18x
B = 1,5 × y × ( - 8 )
B = 1,5y × ( - 8 )
B = - 12y
C = x × ( - 4 ) × ( - x ) × 2
C = (- 4x ) × ( - 2x )
C = + 8x²
D = - 2y² × ( - 15 ) × 2y
D = + 30y² × 2y
D = 60y³
bonne soirée
