Imaginary Unit And Standard Complex Form

                     Lesson 1

                                                                                                                       

                                                             Problem:                    Solve the following: x2+11 = 0

                                                             Solution                     x2 = - 11

 Step 1:                        

                     

                                                                                 Solution                          √x2 = √-11                                                            

 Step 2:                                                                              

                                                             

                                                             Solution                          x = +√-11

 Step 3:                                                                              

                                    

                                                             Solution                          i = √-11

 Step 4:                                                           

 

                                                             Solution                     The answer is:  i = √-11

 

 Step 5:                                                                              

 Complete                                                                   

                                                                                                                               

                                                             Try two practice problems:  

 

                                                                                               Do the following:

A.

Solve the following quadratic equation:

x2 + 7 = 0

B.

Solve the following expression for x:

X6 = - 65

 

                                                                                               

 

 

 

        

© Math Worksheets World.com