BONJOUR, VOUS POUVAIS M'AIDEZ SVPPPP HURGENT!
exercice 1)
a. (6 - 5a) (1 - 4a) b. (2x - 1) (4x - 3)
exercice 2)
a. (x + 1/2) (x - 1/2) b. (t - 2/3) (t - 3/4)
exercice 1)
a. (6 - 5a) (1 - 4a) b. (2x - 1) (4x - 3)
exercice 2)
a. (x + 1/2) (x - 1/2) b. (t - 2/3) (t - 3/4)
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a) ( 6 - 5 a ) ( 1 - 4 a)
= 6 - 24 a - 5 a + 20 a²
= 20 a² - 29 a + 6
b) ( 2 x - 1) ( 4 x - 3)
= 8 x² - 6 x - 4 x + 3
= 8 x² - 10 x + 3
a) ( x + 1/2) ( x - 1/2) = x² - 1/4
b) ( t - 2/3) ( t - 3/4 ) = t² - 3 t/4 - 2t/3 + 6/12
= t² - 9 t/12 - 8 t/12 + 6/12
= 12 t² - 17 t + 6