Salut !
Ex 44:
Décomposition en produit de facteurs premiers:
a) 28 = 2 x 14 = 2 x 2 x 7 = 2² x 7
b) 30 = 2 x 15 = 2 x 3 x 5
c) 45 = 5 x 9 = 5 x 3 x 3 = 3² x 5
d) 56 = 4 x 14 = 2 x 2 x 2 x 7 = 2³ x 7
e) 294 = 14 x 21 = 2 x 7 x 3 x 7 = 2 x 3 x 7²
f) 546 = 13 x 42 = 13 x 2 x 21 = 13 x 2 x 3 x 7
