Réponse :

bonjour

A = ( x - 2 )² - 36

A = ( x - 2 - 6 ) ( x - 2 + 6 )

A = ( x - 8 ) ( x + 4 )

B = 1 - ( 2 x + 3 )²

B = ( 1 + 2 x + 3 ) ( 1 - 2 x - 3 )

B = ( 2 x + 4 ) ( - 2 x - 2 )

B = 4 ( x + 2 ) ( - x - 1 )

C = ( 3 x - 2 )² - ( x + 3 )²

c = ( 3 x - 2 + x + 3 ) ( 3 x - 2 - x - 3 )

C = ( 4 x + 1 ) ( - 2 x - 5 )

D = ( x + 5 )² - ( 2 x - 4 )²

D = ( x + 5 + 2 x - 4 ) ( x + 5 - 2 x + 4 )

D = ( 3 x + 1 ) ( - x + 9 )  

Explications étape par étape