Respuesta :

                 (x−2)(x+6)

          (x+−2)(x+6)

      (x)(x)+(x)(6)+(−2)(x)+(−2)(6)

   x^2+6x−2x−12

 x^2+4x−12

(x-2) (x+6) 
x-2 + x+6 
2x+8 
2x divided by 8 is 4 
x is 4