Please, I need help with this problem.

5. Apply the technique of calculating fixed points to solve the following equation for the unknown fact: fact-.if n = 0 then 1 else n * fact(n-1) and describe the reduction which computes the value of its solution applied to argument 2 5. Apply the technique of calculating fixed points to solve the following equation for the unknown fact: fact-.if n = 0 then 1 else n * fact(n-1) and describe the reduction which computes the value of its solution applied to argument 2