bonjour
A = 15/14 x - 12 /21
A = - 180/ 294
A = - 30/ 49
B = 18 x 10 ¹¹ : 15 x 10 ⁷
B = 1.2 x 10 ⁴
A = 9 x² - 12 x+ 4 - ( 3 x² + 2 x + 15 x + 10 )
A = 9 x² - 12 x + 4 - 3 x² - 17 x - 10
A = 6 x² - 29 x - 6
A = ( 3 x + 2 ) ( 3 x + 2 - x - 5 )
A = ( 3 x + 2 ) ( 2 x - 3 )
A = 0 pour x = - 2/3 ou 3/2
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bonjour
A = 15/14 x - 12 /21
A = - 180/ 294
A = - 30/ 49
B = 18 x 10 ¹¹ : 15 x 10 ⁷
B = 1.2 x 10 ⁴
A = 9 x² - 12 x+ 4 - ( 3 x² + 2 x + 15 x + 10 )
A = 9 x² - 12 x + 4 - 3 x² - 17 x - 10
A = 6 x² - 29 x - 6
A = ( 3 x + 2 ) ( 3 x + 2 - x - 5 )
A = ( 3 x + 2 ) ( 2 x - 3 )
A = 0 pour x = - 2/3 ou 3/2