题目
题型:解答题难度:一般来源:不详
答案
核心考点
举一反三
A.3x2+2x3=5x5 | B.5y2-3y2=2 |
C.2a-5a=-3a | D.-3xy+3xy=xy |
2 |
3 |
A.3.5ab-
| B.2x+3y=5xy | ||
C.4a2b-5ab2=-ab | D.x2+x=x3 |
1 |
3 |
2 |
3 |
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