Sagot :
bjr
H(x) = 16x² - 49/81
= (4x)² - (7/9)² différence de deux carrés
a² - b² = (a - b) ( a + b) [ a = 4x et b = 7/9 ]
(4x)² - (7/9)² = (4x - 7/9) (4x + 7/9)
bjr
H(x) = 16x² - 49/81
= (4x)² - (7/9)² différence de deux carrés
a² - b² = (a - b) ( a + b) [ a = 4x et b = 7/9 ]
(4x)² - (7/9)² = (4x - 7/9) (4x + 7/9)