题目内容
(1)计算:(
)2÷(-
)2.
(2)计算:
÷
.
| y |
| 6x2 |
| y2 |
| 4x |
(2)计算:
| x2-2x+1 |
| x2-1 |
| x-1 |
| x2+x |
(1)原式=
×
=
,
(2)原式=
×
=x.
| y2 |
| 36x4 |
| 16x2 |
| y4 |
| 4 |
| 9x2y2 |
(2)原式=
| (x-1)2 |
| (x+1)(x-1) |
| x(x+1) |
| x-1 |
练习册系列答案
相关题目