Bonsoir
Calculer les nombres suivants :
3^2 = 3 x 3 = 9
10^2 = 10 x 10 = 100
9^2 = 9 x 9 = 81
4^2 + 5^2 = 4 x 4 + 5 x 5 = 16 + 25 = 41
7^2 + 3^2 = 7 x 7 + 3 x 3 = 49 + 9 = 58
9^2 + 6^2 = 9 x 9 + 6 x 6 = 81 + 36 = 117
Calcul mental :
4^2 = 4 x 4 = 16
8^2 = 8 x 8 = 64
3^2 + 9^2 = 3 x 3 + 9 x 9 = 9 + 81 = 90
