Bonsoir
calculer les nombres suivants :
a. 1002²
= (1000 + 2)^2
= 1000^2 + 2 x 1000 x 2 + 2^2
= 1000000 + 4000 + 4
= 1004004
b. 998²
= (1000 - 2)^2
= 1000^2 - 2 x 1000 x 2 + 2^2
= 1000000 - 4000 + 4
= 996000 + 4
= 996004
c. 998X1002
= (1000 - 2)(1000 + 2)
= 1000^2 - 2^2
= 1000000 - 4
= 999996
