Final answer:
The equation (z-2)ʼ=0 is part of the solution.
Step-by-step explanation:
The quadratic equation given is zʼ-3.0=5. To solve this equation by completing the square, we need to get the quadratic term separated and a constant on the other side of the equation. First, add 3 to both sides of the equation to get zʼ=8. Now, we can see that the equation is in the form (z-2)ʼ=0. The equation (z-2)ʼ=0 is part of the solution.