Multiplying And Dividing Complex Numbers

                    Lesson 1

                                                                                                                                                                          

                                                            Problem:                   Multiply: (4 - 2i) (2 - 4i)

                                                            Solution                    (4 - 2i) (2 - 4i)

                           Step 1:  

                     

                                                                                Solution                          = 8 - 16i - 4i + 8i2

Step 2:                        

 

                                                                                Solution                          = 8 - 20i + 8(-1)

                           Step 3:           

                                                                                                = - 20i

 

                                                             Solution                    The answer is:  - 20i

 Step 3:                                                                      

 Complete                                                                   

                                                                                                                               

                                                             Try two practice problems:  

 

                                                                                               Multiply:

 

                                                                                                A. (4 - i)(2 - 3i)

                                                                                                B.  2i + 4(2 - 3i)

 

 

 

        

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