Solving Quadratic Equation

                     Lesson 1

 

                                                            Problem:    Solve for x:  x2 + 3x + 2 = 0

                                                                                                 

                                                            Solution      x2 + 3x + 2 = 0;  x2 + 2x + x + 2  = 0 ;   
                                                            Step 1:        

                           

                                                            Solution      x(x + 2) + 1 (x + 2) = 0; (x + 1)(x + 2) = 0;

Step 2: 

                            

                                                            Solution       x + 2 = 0; x = -2, x + 1 = 0; x = -1

                                                            Step 3: 

 

                                                            Solution      Answer: -2, -1

                                                            Step 4:                                                   

Complete 

                                                           

                                                            Try two practice problems:   

 

                                 A.    x2 + 6x + 9 = 0

 

                                 B.   x2 - 36 = 0

 

 

 

 

 

 

 

 

 

 

 

 

 

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