Réponse :
Explications étape par étape
Bonsoir
Calculer :
A = 1 - (-7/3)
A = 3/3 + 7/3
A = 10/3
B = -2/10 + 7/25
B = (-2 x 5)/(10 x 5) + (7 x 2)/(25 x 2)
B = -10/50 + 14/50
B = 4/50
C = -7/15 x (-5/21)
C = 5/15 x 7/21
C = 5/(5 x 3) x 7/(7 x 3)
C = 1/3 x 1/3
C = 1/9
D = -7/3 : -21/6
D = -7/3 x -6/21
D = 7/21 x 6/3
D = 7/(7 x 3) x (2 x 3)/3
D = 1/3 x 2
D = 2/3
Carrés parfaits compris entre 1 et 144 :
1 x 1 = 1
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x 5 = 25
6 x 6 = 36
7 x 7 = 49
8 x 8 = 64
9 x 9 = 81
10 x 10 = 100
11 x 11 = 121
12 x 12 = 144
