Sagot :
bonjour
(3x+8)² + (3x+8)(-9x-4)
= ( 3 x + 8 ) ( 3 x + 8 - 9 x - 4 )
= ( 3 x + 8 ) ( - 6 x + 4 )
= - 2 ( 3 x + 8 ) ( 3 x - 2 )
bonjour
(3x+8)² + (3x+8)(-9x-4)
= ( 3 x + 8 ) ( 3 x + 8 - 9 x - 4 )
= ( 3 x + 8 ) ( - 6 x + 4 )
= - 2 ( 3 x + 8 ) ( 3 x - 2 )