Page 219 - aljaber
P. 219

@ @¶ìÿa@óÝy‹¾a@ u@                        @RPV

f (x ) = ax 6 + bx 4 + cx 2                                      ()

               x2 − 9                         2 x −3

−2x +2 ( )     3x ( )                 2x ( )       −2x ()

  3            2                      3              3

        . f (x) = ax 4 + bx 3 + 1             x2 −1              ()

                                              a +b

1 ( ) 0 ( ) −1 ( ) −2 ( )

            .                x 4 − 6x 3 + 24x − 16 = 0           ()

10 + 13 ( ) 5 + 13 ( ) 5 ( ) 5 − 13 ( )

               ba                        [AMC10B 2006] ( )

               b+1           a+1           x 2 − mx + 2 = 0
                    a             b        x 2 − px + q = 0
                                   q

9 ()           7( )                −7 ( )               −9 ()

2              2                     2                    2

                                            [AMC10A 2002] (      )

            (2x + 3)(x − 4) + (2x + 3)(x − 6) = 0

13 ( )         7( )                   4( )               7()

               (x + 1)2(x + 3)(x − 1) = −4                2      )
                                                                 )
4+2 2 ( )      2+ 2 ( )               0( )                    (

           x 3 + px 2 + qx + r = 0                      −4 ( )
                                                              (
   214   215   216   217   218   219   220   221   222   223   224