Sagot :
ex 2
10x² - 8x = 2x*5x - 2x*4 = 2x(5x - 4)
16-4x = 4*4 - 4*x = 4(4-x)
50y² + 25y = 25y*2y + 25y*1 = 25y(2y+1)
8a² + 4a + 16 = 4*2a² + 4*a + 4*4 = 4(2a² + a + 4)
bonjour
A = 5 x² - 3 x + 10 x - 6 = 5 x² + 7 x - 6
B = 24 x - 6 x²
C = 20 - 10 y
D = 15 a - 9 a² + 5 - 3 a = - 9 a² + 12 a + 5
E = 2 x ( 5 x - 4 )
F = 4 ( 4 - x )
G = 25 y ( 2 y + 1 )
H = 4 ( 2 a² + a + 4 )