Sagot :
Réponse:
Bonjour
exercice 7 :
-24y-24 → -24(y+1)
-4y+24 → -4(y-6)
4y-24 → 4(y-6)
-4y²+24y → -4y(y-6)
-4y²-24 → -4(y²+6)
exercice 8 :
N = 4a² + 3a
= a (4a+3)
P = 2b² + b
= b(2b +b)
Q = 6c +7c²
= c(6+7c)
R = -8d +5d²
= d(-8+5d)
S= a-6a²
= a(1-6a)
T = 5b -4b²
= b(5-4b)
U = 10c² -9c
= c(10c-9)
V = -3d²-7d
= d(-3d-7)
salut.
exo 7:
-24y-24= -24(y+1)
-4y+24= -4(y-6)
4y-24= 4(y-6)
-4y²+24y= -4(y-6)
-4y²-24= -4(y²+6)
exo8:
N= 4a²+3a
N= a(4a+3)
P= 2b²+b
P= b(2b+1)
Q= 6c+7c²
Q= c(6+7c)
R= -8d+5d²
R= -d(8-5d)
S= a-6a²
S= a(1-6a)
T= 5b-4b²
T= b(5-4b)
U= 10c²-9c
U= c(10c-9)
V= -3d²-7d = -d(3d+7) . voilà !