Answer:
Add 9 to each side of the equation.
Step-by-step explanation:
To complete the square, we need to add (b/2) ^2 to each side, where b is the coefficient of the x terms.
The coefficient of the x terms is -6
so we need to add (-6/2) ^2 = (-3)^2 = 9.
Add 9 to each side of the equation.
