j'ai besoun d'aide svp pour mon exercice de maths sur la factorisation B=(5x+1)(3x-5)-(x-3)(5x+1) C=(3x+2)(-5x-7)-(3x+2)(x+7) D=(5x-8)(7x-3)-(7x-3) au carré

Bonjour

factorisation

B=(5x+1)(3x-5)-(x-3)(5x+1)

B = (5x + 1)(3x - 5 - x + 3)

B = (5x + 1)(2x - 2)

B = 2(5x + 1)(x - 1)

C=(3x+2)(-5x-7)-(3x+2)(x+7)

C = (3x - 2)(-5x - 7 - x - 7)

C = (3x - 2)(-6x - 14)

C = -2(3x - 2)(3x + 7)

D=(5x-8)(7x-3)-(7x-3)^2

D = (7x - 3)(5x - 8 - 7x + 3)

D = .... je te laisse terminer