Réponse :

Bonjour

Explications étape par étape

Factorisations

A = (2x -3)(24x -3) + (2x -3) (-22x +5)

A = (2x -3) (24x -3 -22x +5)

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

B = (15x +7)(3 -x) + (12x +5)(15x +7)

B = (15 x +7)( 3 -x +12x +5)

B = (15x +7) ( 11x +8)

C = (7x -26)(11x +8) + (7x -26)(12x +4)

C = (7x -26) (11x +8 +12x +4)

C = (7x -26) (23x +12)

D = (13t +5)(-5t +2) - (8t -15)(13t +5)

D =  (13t +5)( -5t +2 -8t +15)

D = (13 t +5) ( -13t +17)