Respuesta :

k^2 +3k +5k + 15
k (k+3) +5 (k+3)
(k+5)(k+3)


So, the correct option is the last one.

Answer:

k^2 +3k +5k + 15

k (k+3) +5 (k+3)

(k+5)(k+3)

Step-by-step explanation:

last one