bonjour
utiliser la distributivité
A = - 16 x + 72
B = x² - 3 x + 2 x - 6 = x² - x - 6
C = - 12 x² + 3 x + 8 x - 7 = - 12 x² + 11 x - 7
d = 15 x² - 6 x - 5 x + 2 = 15 x² - 11 x + 2
B :
(x + 2) (x - 3)
x² - 3x + 2x - 6
x² - 1x - 6
C :
(3x + 7) (4x - 1)
16x² - 3x + 28x - 7
16x² + 25x - 7
D :
(-3x + 1) (-5x + 2)
15x² - 6x - 5x + 2
15x² - 11x + 2
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bonjour
utiliser la distributivité
A = - 16 x + 72
B = x² - 3 x + 2 x - 6 = x² - x - 6
C = - 12 x² + 3 x + 8 x - 7 = - 12 x² + 11 x - 7
d = 15 x² - 6 x - 5 x + 2 = 15 x² - 11 x + 2
B :
(x + 2) (x - 3)
x² - 3x + 2x - 6
x² - 1x - 6
C :
(3x + 7) (4x - 1)
16x² - 3x + 28x - 7
16x² + 25x - 7
D :
(-3x + 1) (-5x + 2)
15x² - 6x - 5x + 2
15x² - 11x + 2