题目
题型:解答题难度:一般来源:不详
4 |
x+2 |
答案
2(x+2)-4 |
x+2 |
2x |
x+2 |
故答案为:
2x |
x+2 |
核心考点
举一反三
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.
|
4 |
x+2 |
2(x+2)-4 |
x+2 |
2x |
x+2 |
2x |
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.
|