A.ab与
| B.xy与2y | C.ab2与a2b | D.5ab与6ab2 |
1 |
2 |
A.2a2+3a2=5a2 | B.2a2+3a2=6a2 |
C.4xy-3xy=1 | D.2x3+3x3=5x6 |
A.ab与abc | B.-53与-x3 | C.5x2y与3y2x | D.-2xy与-5yx |
A.5a-(b+2c)=5a+b-2c | B.5a-(b+2c)=5a-b+2c |
C.5a-(b+2c)=5a+b+2c | D.5a-(b+2c)=5a-b-2c |
A.-a+b-c | B.-a-b+c | C.-a-b-c | D.-a+b+c |
1 |
3 |
A.m=1,n=1 | B.m=1,n=3 | C.m=3,n=1 | D.m=3,n=3 |
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