Répondre :
Factoriser au maximum
J= 4x² -12x +9
=(2x-3)²
K= (4x+3)(x-1)+4x+3
=(4x+3)(x-1+1)
=(4x+3)(x)
L= 5-x+(x-5)(2x+1)
=(5-x)(1-2x-1)
=(5-x)(-2x)
J= 4x² -12x +9
=(2x-3)²
K= (4x+3)(x-1)+4x+3
=(4x+3)(x-1+1)
=(4x+3)(x)
L= 5-x+(x-5)(2x+1)
=(5-x)(1-2x-1)
=(5-x)(-2x)