题目列表(包括答案和解析)
| 2x |
| 3y |
| ( ) |
| 6xy |
| 6xy |
| ( ) |
| 100x2y2 |
| ( ) |
| 1 |
| a-4 |
| ( ) |
| a2-16 |
| 2a2-2ab |
| a-b |
| 2a |
| ( ) |
| 2x2+2xy |
| x+y |
| 2x |
| ( ) |
| ( ) |
| m+1 |
| -2x |
| 1-2x |
| ( ) |
| 2x2-x |
| a2-3ab+b2 |
| ab |
| ( ) |
| ab |
| 2x |
| 3y |
| ( ) |
| 6xy |
| 6xy |
| ( ) |
| 100x2y2 |
| ( ) |
| 1 |
| a-4 |
| ( ) |
| a2-16 |
| 2a2-2ab |
| a-b |
| 2a |
| ( ) |
| 2x2+2xy |
| x+y |
| 2x |
| ( ) |
| ( ) |
| m+1 |
| -2x |
| 1-2x |
| ( ) |
| 2x2-x |
| a2-3ab+b2 |
| ab |
| ( ) |
| ab |
| 2 |
| 4-2 |
| 6 |
| 6-4 |
| 5 |
| 5-4 |
| 3 |
| 3-4 |
| 7 |
| 7-4 |
| 1 |
| 1-4 |
| 10 |
| 10-4 |
| -2 |
| -2-4 |
| 20 |
| 20-4 |
| () |
| ()-4 |
| x |
| x+y |
| ( ) |
| (x-y)(x+y) |
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