Sagot :
Réponse :
Explications étape par étape
Bjr,
A = 4a – 4b + 8
4(a-b+2)
B = 3a² – 4
??
C = (3y + 11) * 2 – 7y (3y + 11)
(3y+11)( 2-7y)
D = 3 (5 – 9x) – (5 – 9x) (1 - 3x)
(5-9x) (3-1+3x) = (5-9x) ( 2+3x)
E = 64x² – 49
(8x-7)(8x+7)
F = 100 – 60x + 9x²
(10-3x)²
G = 6x² + 36x + 9
3(2x² +12x+3)
H = 49 – (2 + 3x)²
(7-2-3x)( 7+2+3x ) = (5-3x)( 9+3x)
I = (y – 9)² - 25
(y-9-5) (y-9+5) = (y -14) ( y-4)
A = 4a – 4b + 8
A= 4a-4b+2x4=4(a-b+2)
B = 3a² – 4 ? C sûr que c pas un 4 au lieu de 3 ?
C = (3y + 11) * 2 – 7y (3y + 11)
C= (3y+11)(2-7y)
D = 3 (5 – 9x) – (5 – 9x) (1 - 3x)
D=(5-9x)(3-(1-3x)
D=(5-9x)(2+3x)
E = 64x² – 49
E= 8*8x2-7*7
= (8x-7)(8x+7)
F = 100 – 60x + 9x²
=10*10-2*3*10+3*3x2
=(10-3x)2
G = 6x² + 36x + 9
=3(2X2+12X+3)
H = 49 – (2 + 3x)²
= 7*7 – (2 + 3x)²
= (7-(2+3x)) (7+(2+3x))
=(5-3x)(9+3x)
I = (y – 9)² - 25
=(y-9)2 -5*5
=((y-9)-5)((y-9)+5)
=(y-14)(y-4)
