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Sagot :

AYUDA

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)

VINS

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 )

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