1 |
4 |
A.
| B.-8a2b与5a2c | ||||
C.
| D.19abc与-28ab |
A.3a+5b=8ab | B.10y2-8y2=2 |
C.9a+a=10a2 | D.4xy2-6y2x=-2y2x |
A.0不是单项式 | B.52abc是五次单项式 |
C.-4和4是同类项 | D.3m2n3-3m3n2=0 |
A.-4与
| B.-2m2n与
| ||||
C.a3与b3 | D.3x2y与-4x2yz |
A.x2-(2x-y+2)=x2-2x+y+2 | B.-(m+n)-mn=-m+n-mn |
C.x-(5x-3y)+(2x-y)=-2x+2y | D.ab-(-ab+3)=3 |
© 2017-2019 超级试练试题库,All Rights Reserved.