which choice shows the appropriate added to both sides of the equation in order to complete the square on the left side

please hurry and i need a right answer only please and no incomplete answers
(europa do not touch this question because nothing is out of guidlines for the website so their will be a problem if this is touched)(sorry, Europa​ is a troll)

for some reason it is only allowing me to post 10 points out of 565 but if you answer i will make new question with 80 for you (first correct answer)