3 | a |
3 | b |
3 | a-b |
A.ab<0且a>b | B.ab>0且a>b |
C.ab<0且a<b | D.ab>0且a>b或ab<0且a<b |
3 | a |
3 | b |
3 | a-b |
3 | ab2 |
3 | a2b |
3 | ab2 |
3 | a2b |
A.
| B.
| C.a2<b2 | D.
|
a+b |
2 |
2ab |
a+b |
a+b |
2 |
a+b |
2 |
|
b2 |
a |
a2 |
b |
A.1 | B.2 | C.3 | D.4 |
1 |
a |
1 |
b |
A.1个 | B.2个 | C.3个 | D.4个 |
A.a2<b2 | B.
| C.a3b2<a2b3 | D.ac2<bc2 |
A.log0.76<0.76<60.7 | B.0.76<60.7<log0.76 |
C.log0.76<60.7<0.76 | D.0.76<log0.76<60.7 |
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