Répondre :
Bonjour,
On fait :
[tex]A = (4x+1)(3x+4)+(4x+1)(8x-3)\\ A = (4x+1)\left[(3x+4)+(8x-3)\right]\\ A = (4x+1)(11x+1)[/tex]
[tex]B = 7(2a-4)-7(3a-6)\\ B = 7\left[(2a-4)-(3a-6)\right]\\ B = 7\left[2(a-2)-3(a-2)\right]\\ B = -7(a-2)[/tex]
Bonjour,
On fait :
[tex]A = (4x+1)(3x+4)+(4x+1)(8x-3)\\ A = (4x+1)\left[(3x+4)+(8x-3)\right]\\ A = (4x+1)(11x+1)[/tex]
[tex]B = 7(2a-4)-7(3a-6)\\ B = 7\left[(2a-4)-(3a-6)\right]\\ B = 7\left[2(a-2)-3(a-2)\right]\\ B = -7(a-2)[/tex]