MICHELCECCHI
Answered


a) 7 x (a + b);
c) (4 + x) x 3;
b) 2 x (x - y);
d) cx (3 - b).
Développer chaque produit.​

Sagot :

TIMOTHEJACQUES13

Réponse :

a) 7*(a + b) = 7a + 7b

b) 2*(x - y) = 2*x + 2*(-y) = 2x-2y

c) (4 + x)*3 = 3*4 + 3*x = 12 + 3x

d) cx (3 - b) = cx*3 + cx*(-b) = 3cx - cxb