因为此方程是关于x的一元二次方程,
所以,k≠6,k≠9,
于是有:x1=
| 9 |
| 6−k |
| 6 |
| 9−k |
由①得k=
| 6x1−9 |
| x1 |
| 9x2−6 |
| x2 |
∴
| 6x1−9 |
| x1 |
| 9x2−6 |
| x2 |
整理得x1x2-2x1+3x2=0,
有(x1+3)(x2-2)=-6.
∵x1、x2均为整数,
∴
|
故x1=-9,-6,-5,-4,-2,-1,0,3.
又k=
| 6x1−9 |
| x1 |
| 9 |
| x1 |
将x1=-9,-6,-5,-4,-2,-1,3分别代入,得
k=7,
| 15 |
| 2 |
| 39 |
| 5 |
| 33 |
| 4 |
| 21 |
| 2 |
| 9 |
| 6−k |
| 6 |
| 9−k |
| 6x1−9 |
| x1 |
| 9x2−6 |
| x2 |
| 6x1−9 |
| x1 |
| 9x2−6 |
| x2 |
|
| 6x1−9 |
| x1 |
| 9 |
| x1 |
| 15 |
| 2 |
| 39 |
| 5 |
| 33 |
| 4 |
| 21 |
| 2 |