0.5x-1 |
0.3x+2 |
0.5x-1 |
0.3x+2 |
10(0.5x-1) |
10(0.3x+2) |
5x-10 |
3x+20 |
5x-10 |
3x+20 |
z |
xy |
z2 |
xyz |
axy |
abxy2 |
1 |
by |
1 |
x+1 |
x-1 |
x2+1 |
x-1 |
x2-2x+1 |
1 |
x-1 |
4x2y |
6xy2 |
x2-4 |
xy+2y |
0.3x+0.2y |
0.05x-y |
a-
| ||||
|
-a+b |
-c |
a+b |
c |
-a+b |
-c |
b-a |
c |
-a+b |
-c |
a-b |
c |
A.0个 | B.1个 | C.2个 | D.3个 |
0.3a+0.02b |
0.1c-0.03d |
© 2017-2019 超级试练试题库,All Rights Reserved.