The first time I tried this problem I found it challenging because the calculation process is long and it is difficult to know how to calculate and obtain the answer in the middle of the process. When calculating (4-√x+4)2^, I answered 4-8√x+4+x+4 so I made a mistake. I didn’t know why the answers didn’t match, so I asked a friend. I should also write the equation clearly and remember to check for mistakes along the way because the equation is long. I need to develop the skill to calculate problems carefully and meticulously. If I encounter a difficult problem, I might try to look at the answer key and work backwards, or ask the teacher.