Aidez moi svp c pour demain

1. 7x + 14
2. -4a -12
3. 8m + m2 (m puissance 2)
4. 12+ 6x
5. 27b + 9b2 (b puissance 2)

Réponse :

A = 7(x + 2)
A = 7 x x + 7 x 2
A = 7x + 14

B = -4(a + 3)
B = -4 x a + -4 x 3
B = -4a - 12

C = m(8 + m)
C = m x 8 + m x m
C = 8m + m²

D = 6(2 + x)
D = 6 x 2 + 6 x x
D = 12 + 6x

E = 9b (3 + b)
E = 9b x 3 + 9b x b
E = 27b + 9b²