题目内容
已知4x2-4x+1+
=0,求x+y的值.
| 3y-2 |
4x2-4x+1+
=0,即(2x-1)2+
=0,
∵(2x-1)2≥0,
≥0,
∴2x-1=0,且3y-2=0,即x=
,y=
,
则x+y=
+
=1
.
| 3y-2 |
| 3y-2 |
∵(2x-1)2≥0,
| 3y-2 |
∴2x-1=0,且3y-2=0,即x=
| 1 |
| 2 |
| 2 |
| 3 |
则x+y=
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 6 |
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