Respuesta :
x2 + 16x + 48
= x2 + 12x + 4x + 48
= (x2 + 12x) + (4x + 48)
= x (x + 12) + 4 (x + 12)
= (x + 12) (x + 4)
= x2 + 12x + 4x + 48
= (x2 + 12x) + (4x + 48)
= x (x + 12) + 4 (x + 12)
= (x + 12) (x + 4)