Répondre :
Bonjour,
a)[tex]12\times 8 = 3\times 4 \times 8 = 3\times 2^2\times 2^3 = 3\times 2^{2+3} = 3\times 2^5[/tex]
b)[tex]16\times 18 = 16 \times 2 \times 9 = 2^4\times 2\times 3^2 = 3^2\times 2^5[/tex]
c)[tex]24\times 6 = 3\times 8 \times 3 \times 2 = 3^2 \times 2^3 \times 2 = 3^2 \times 2^4[/tex]