What number goes in the "?" spot below when solving by completing the square?

Hint: work through the problem, when you get to this step, fill in the number you would be adding to both sides.

x^2 + 22x-13=0

x^2 + 22x + ? = 13 + ?

Question 6: Carter is solving for x by the process of completing the square for the following problem:

3x^2+12x-24=0

He got to this point below: Type the number that goes in the "?" spot:

Question 7: Solve using the Quadratic formula: 2x^2 - x - 13 = 2