I assume it's clear now

For the four bus power system in power world shown below, which can be downloaded from Blackboard: Part I: Powerworld Solution: 1. Reset it to Flat Start, then using Newton-Raphson power flow method to solve the power flow (determine the voltage magnitude and angle at each bus); 2. Using Fast Decoupled Newton-Raphson method to solve the same problem; 3. Using DC power flow to solve the same problem. Please use table to summarize the result tor each question (such as voltage magnitude, voltage angle, real power, reactive power). Please add the screenshot from Powerworld for each question. Part II: Manual Solution: 1. Using DC power flow method and the data from the Powerworld model to solve the same problem manually. Compare the results with Powerworld solution