题目内容
已知(a+b)2+|2b-1|=0,则 6ab-2ab-3(ab-1)=______.
根据题意得,a+b=0,2b-1=0,
解得a=-
,b=
,
∴6ab-2ab-3(ab-1)
=6ab-2ab-3ab+3
=ab+3
=-
×
+3
=2
.
故答案为:2
.
解得a=-
| 1 |
| 2 |
| 1 |
| 2 |
∴6ab-2ab-3(ab-1)
=6ab-2ab-3ab+3
=ab+3
=-
| 1 |
| 2 |
| 1 |
| 2 |
=2
| 3 |
| 4 |
故答案为:2
| 3 |
| 4 |
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