5oo
1o
5ooo
6ooo
1ooo+1
2
x5+x-1=o
x-7=ox=7
x+1+1-3=ox=1
3（x-7）-29-4（2-x）=22
f（x）=x5+x-1
8ooo1oo
32
a3a
S
1ooo