题目内容
已知实数a、b、c满足
|a-b|+
+c2-c+
=0,则a(b+c)=______.
| 1 |
| 2 |
| 2b+c |
| 1 |
| 4 |
原式=
|a-b|+
+(c-
)2=0,
∴
|a-b|=0,
=0,(c-
)2=0,
∴c=
,b=-
,a=-
,
∴a(b+c)=-
.
故答案为:-
.
| 1 |
| 2 |
| 2b+c |
| 1 |
| 2 |
∴
| 1 |
| 2 |
| 2b+c |
| 1 |
| 2 |
∴c=
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
∴a(b+c)=-
| 1 |
| 16 |
故答案为:-
| 1 |
| 16 |
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