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 |
A.-5 | B.1 | C.5 | D.-1 |
A.-2b2-ab+4 | B.-b2-ab+4 | C.-2b2+ab-4 | D.-2b2-ab-4 |
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