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ds1_2a_2s_09

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cours,maths,gratuit,2012,facile,colll�ge

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									         09 / 08
                                      1



                                          (           3) 1

                                                                      .                  1

                   B 1 2 3x 1 3 2x                1          A   x 1 x            x x 3
                                                  3
                                                                              .          2

                     D   x 2    2x 4              x 2 x             C 15 3x

                                          (           3) 2


                                                                          .

                     x2 1 5               x+ 1 x+ 3 =0                        1 x    2
                                             2    2

                                          (           4) 3

            .140km
                               .84km /h                          56km /h
                                              .                                          1

                                          .           45                                 2




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