A.9x-4x+5x=10x | B.
| ||||
C.x3-x2=x | D.xy+2xy=3xy |
1 |
2 |
1 |
2 |
2 |
3 |
1 |
3 |
A.-3a-(2b-c)=-3a+2b-c | B.-3a-(2b-c)=-3a-2b-c |
C.-3a-(2b-c)=-3a+2b+c | D.-3a-(2b-c)=-3a-2b+c |
A.2a2b-3a2b=-a2b | B.3x+2y=5xy |
C.5xy-3xy=2 | D.a2+a=a3 |
A.
| ||||
B.-0.5x3y2与2x2y3是同类项 | ||||
C.5m2n与-2nm2是同类项 | ||||
D.
|
© 2017-2019 超级试练试题库,All Rights Reserved.