问题
解答题
已知4x2-4x+1+
|
答案
4x2-4x+1+
=0,即(2x-1)2+3y-2
=0,3y-2
∵(2x-1)2≥0,
≥0,3y-2
∴2x-1=0,且3y-2=0,即x=
,y=1 2
,2 3
则x+y=
+1 2
=12 3
.1 6
已知4x2-4x+1+
|
4x2-4x+1+
=0,即(2x-1)2+3y-2
=0,3y-2
∵(2x-1)2≥0,
≥0,3y-2
∴2x-1=0,且3y-2=0,即x=
,y=1 2
,2 3
则x+y=
+1 2
=12 3
.1 6