Sagot :
Bonjour
Dans chaque cas, développer.
a. 6(3+5) = 18 + 30 = 48
b.(b-7) x8= 8b - 56
c. 4(5x - 2) = 20x - 8
bjr
a. 6(3+5) = 6 x 3 + 6 x 5 = 18 + 30 = 48
b.(b-7) x 8= b x 8 - 7 x 8 = 8b - 56
c. 4(5x - 2) = 4 *5x - 4 x 2 = 20x - 8
Bonjour
Dans chaque cas, développer.
a. 6(3+5) = 18 + 30 = 48
b.(b-7) x8= 8b - 56
c. 4(5x - 2) = 20x - 8
bjr
a. 6(3+5) = 6 x 3 + 6 x 5 = 18 + 30 = 48
b.(b-7) x 8= b x 8 - 7 x 8 = 8b - 56
c. 4(5x - 2) = 4 *5x - 4 x 2 = 20x - 8