54
( ) 3 2 3 8P x x x x
32
( ) 3 8 18 5P x x x x
32
( ) ( 3 2) (6 5) 15P x x a x a x a
1
2
( ) 2 4 2P x mx mx m
2 2 2
( ) ( 1) 2 (1 2 ) 3( 1)P x m x m m x m
2
2
( ) 2 4
( ) 6 2
2
P x x x
a
Q x x bx c
2
( ) 2 4 5
( ) ( 1)(2 )
P x x x
Q x ax x b c
32
2
( ) 3 5 3
( ) ( 1)( )
P x x x x
Q x x ax bx c
3
( ) ( 1)( 2)
()
P x x x
Q x ax bx x c
32
( ) 4 4P x x x x
4 3 2
6 5 38 5 6 0 ........... 1x x x x
22
11
6 5 38 0 ........... 2xx
xx
2
6 5 50 0 ........... 3uu
32
2 5 6P x x x x
3 2 2
( ) 3( ) ( 3)f x ax x b x cx x x
32
2 13 27 18f x x x x
2
3f x x ax bx c
2
( ) ( 1)( )P x x ax bx c