Réponse :
Explications étape par étape
Bonjour
Factoriser au maximum chacune des expressions suivantes.
a) A = (3x+1)(x+4) - (2x - 5)(x+4)
A = (x + 4)(3x + 1 - 2x + 5)
A = (x + 4)(x + 6)
b) B= (7x - 3)2 – x(7x - 3)
B = (7x - 3)(7x - 3 - x)
B = (7x - 3)(6x - 3)
B = (7x - 3) * 3(2x - 1)
B = 3(7x - 3)(2x - 1)
c) C = 2 - x-(2-x)2
C = (2 - x)(1 - 2 + x)
C = (2 - x)(x - 1)
d) D= (2x+4)(x-3) - (x-3)2
D = (x - 3)(2x + 4 - x + 3)
D = (x - 3)(x + 7)
e) E = 5x(x +4)+2(x - 2)(x+4)
E = (x + 4)(5x + 2(x - 2))
E = (x + 4)(5x + 2x - 4)
E = (x + 4)(7x - 4)
f) F = 5(x + 1)2 – (3x − 2)(x+1)
F = (x + 1)[5(x + 1) - 3x + 2]
F = (x + 1)(5x + 5 - 3x + 2)
F = (x + 1)(2x + 7)