Page 22 - Modul Pengembangan _Neat
P. 22

Contoh :


       Tentukan hasil dari (2   − 5) (   + 3)


         Metode FOIL (The FOIL Method)
                                                                F      Fist

                                                                O      Outer
                                                                I      Inner
                                                                L      Last






                2y − 5    + 3 = 2    ×    + 2    × 3 + −5 ×    + −5 × 3


                                        2
                                      = 2   + 6   + −5   + −15

                                       2
                                      = 2   + 6   − 5    − 15
                                      = 2   +     − 15
                                        2

         Metode Pemisahan (The Splitting Method)





                2    − 5    + 3 = 2       + 3 + −5    + 3




                                         2
                                        = 2   + 6   + −5   + (−15)

                                         2
                                       = 2   + 6    − 5    − 15

                                       = 2   +     − 15
                                         2

        Metode Muka Senyum (The Smile Face Method)



                 2    − 5    + 3 = 2    ×    + −5 × 3 + 2   × 3 + (−5) ×   






      15
   17   18   19   20   21   22   23   24   25   26   27