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Workbook





               CLASS EXERCISES
                                                            
               1) If  a  0 , then evaluate   aa   5    a 2  a  .
                                                            3
                                                4







                         2a  2 .b  3
               2) Simplify        .
                          4a   3 .b 2







                                                
                                            x 10 . x  1   10
               3) If  x  0 , then evaluate             .
                                             xxx  5 .   4  11








                                                                 
                                                                 3
                                             2 1 
                                                            1 1 
                                            
                                                           
                                          3
                                         
                                        x
               4) If  x  0 , then evaluate      2   .  x  2    
                                               x 4         x 
                                   
                            0  , 25   54.    6
                                    3
               5) Evaluate                    .
                                    8
                            183,0      2  4  3 .  3 




                    x   2 4   2 4   2 4   2 4                 x
                                        
               6) If                      , then what is the value of    .
                    y   4 3   4 3   4 3   4 3                 y
                                        







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