Réponse:
B = (x-2) (x-3)
C= (x-10)(x+10)
D= x(-5+4x)
E= (6x-5)(6x+5)
G= (3x+2)^2
H= (x-9)(3x-1)
Explications étape par étape:
B = (3x + 1)(x - 2) - (x - 2)(2x + 4)
= (x-2) [(3x+1)-(2x+4)]
= (x-2) (3x+1-2x-4)
= (x-2) (x-3)
C = x^2 - 100
= (x-10)(x+10)
D = -5x + 4x^2
= x(-5+4x)
E = 36x^2 - 25
= (6x-5)(6x+5)
G = 9x^2 + 12x + 4
= (3x+2)^2
H = (2x - 5)^2 - (4 + x)^2
= [(2x-5)-(4+x)] [(2x-5)+(4+x)]
= (2x-5-4-x)(2x-5+4+x)
= (x-9)(3x-1)