Question

how did hercules kill the serpent

Answer 1

it's not serpent ,it's setpent

First, she used her supernatural powers to prevent the baby Hercules from becoming the ruler of Mycenae. ... Then, after Hercules was born, Hera sent two snakes to kill him in his crib. The infant Hercules was unusually strong and fearless, however, and he strangled the snakes before they could strangle him

Answer 2

.....hey mate , here's your answer......
Greek goddess Hera had sent poisonous serpents to kill Hercules , but he instead strangled the two great snakes that were seeking to devour him.
.......hope this helps you.......