Exercice :
Effectuer les multiplications suivantes (détailler et simplifier)
A =
B =
C =
D =
E =
F =
G =
A =
A =
A =
A =
A =
A =
A =
A =
A =
B =
B =
B =
B =
B =
B =
B =
B =
B =
C =
C =
C =
C =
C =
D =
D =
D =
D =