已知4x2-4x+1+3y-2=0,求x+y的值.
问题描述:
已知4x2-4x+1+
=0,求x+y的值.
3y-2
答
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