Ex 1 :
* =multiplier
H = 3*5 + 2
H = 15 + 2
H = 17
I = 8 + 4*7
I = 8 + 28
I = 36
N = 10* (10+5)
N = 10* 15
N = 150
Ex 2 :
* = multiplier
Cm2 = centimètres au carré
1) a. P = 2*(5+x)+(2*3)
b. P = 2*(5+4)+(2*3)
P = 2*9 + 6
P = 18 + 6
P = 24 cm
2) a. A = Longueur * largeur
A = (5+x)*3
b. A = (5+2)*3
A = 7*3
A = 21 cm2
