题目
题型：解答题难度：一般来源：不详
| x |
| x2-25 |
| 5 |
| x2+10x+25 |
答案
| x(x+5)-5(x-5) |
| (x+5)2(x-5) |
| x2+25 |
| (x-5)(x+5)2 |
核心考点
举一反三
| 4 |
| x+2 |
| 3c |
| ab |
| 4c |
| ab |
| 7 |
| ab |
（2）
| a |
| a-b |
| b |
| b-a |
（3）
| a2 |
| a+3 |
| 9 |
| a+3 |
（4）
| 5 |
| 6ab |
| 2 |
| 3ac |
| 3 |
| 4abc |
| M |
| x2-y2 |
| 2xy-y2 |
| x2-y2 |
| x-y |
| x+y |
A．
| B．
| ||||||||||||
C．
| D．
|
| x |
| x2-25 |
| 5 |
| x2+10x+25 |
| x(x+5)-5(x-5) |
| (x+5)2(x-5) |
| x2+25 |
| (x-5)(x+5)2 |
| 4 |
| x+2 |
| 3c |
| ab |
| 4c |
| ab |
| 7 |
| ab |
| a |
| a-b |
| b |
| b-a |
| a2 |
| a+3 |
| 9 |
| a+3 |
| 5 |
| 6ab |
| 2 |
| 3ac |
| 3 |
| 4abc |
| M |
| x2-y2 |
| 2xy-y2 |
| x2-y2 |
| x-y |
| x+y |
A．
| B．
| ||||||||||||
C．
| D．
|