F = 9x² - 2x
F = x × 9x - x × 2
F = x ( 9x - 2 )
G = 55x + 11
G = 11 × 5x + 11 × 1
G = 11 ( 5x + 1 )
H = ( 2x + 1 ) ( 3x - 5 ) - 7 ( 2x + 1 )
H = 6x² - 7x - 5 - 14x - 7
H = 6x² - 21x - 12
Voila :) .Pour le dernier tu as dû oublier quelques choses
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F = 9x² - 2x
F = x × 9x - x × 2
F = x ( 9x - 2 )
G = 55x + 11
G = 11 × 5x + 11 × 1
G = 11 ( 5x + 1 )
H = ( 2x + 1 ) ( 3x - 5 ) - 7 ( 2x + 1 )
H = 6x² - 7x - 5 - 14x - 7
H = 6x² - 21x - 12
Voila :) .Pour le dernier tu as dû oublier quelques choses