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下列方程中,属于一元二次方程的是A.B.3y2-2x+1=0C.D.y2-3y+6=0
试题详情
下列方程中,属于一元二次方程的是( )
A.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAE4AAAAqCAYAAAAdz21RAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAJnSURBVGhD7ZmJrcMgDECZLDuxDsswCqNQDAnh
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G/oNgyOGFQbH4IgEiNPY4hgckQBxGlvcZeB88gt5XPhKTVz54dO45CIqmMExOCIB4rS1FhfrXhcv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)
B.3y
2-2x+1=0
C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFkAAAAZCAYAAABaU4LDAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.y
2-3y+6=0
相关试题
-
下列方程中,属于一元二次方程的是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAE4AAAAqCAYAAAAdz21RAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.3y2-2x+1=0
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFkAAAAZCAYAAABaU4LDAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.y2-3y+6=0
-
(2001•广州)把方程
化为整式方程,得( )
A.x2+3y2+6x-9=0
B.x2+3y2-6x-9=0
C.x2+y2-2x-3=0
D.x2+y2+2x-3=0
-
(2001•广州)把方程
化为整式方程,得( )
A.x2+3y2+6x-9=0
B.x2+3y2-6x-9=0
C.x2+y2-2x-3=0
D.x2+y2+2x-3=0
-
(2001•内江)用换元法解方程:x2+2x+1+
=3,设y=
,则原方程可化为( )
A.y2+3y-1=0
B.y2+3y+1=0
C.y2+y-1=0
D.y2+3y+3=0
-
(2001•内江)用换元法解方程:x2+2x+1+
=3,设y=
,则原方程可化为( )
A.y2+3y-1=0
B.y2+3y+1=0
C.y2+y-1=0
D.y2+3y+3=0
-
下列方程属于一元二次方程的是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEsAAAAjCAYAAADc6ffdAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.x(x2-3x-1)=0
C.x2+2xy+y2=0
D.x2+2x+8=0
-
(2002•盐城)解方程
,设y=x+
,那么原方程变形为( )
A.y2-3y=0
B.y2-3y+2=0
C.y2-3y-4=0
D.y2-3y+4=0
-
(2002•盐城)解方程
,设y=x+
,那么原方程变形为( )
A.y2-3y=0
B.y2-3y+2=0
C.y2-3y-4=0
D.y2-3y+4=0
-
(2005•黄石)解方程
-3=0,如果设
=y,那么原方程可化为( )
A.y2+3y+2=0
B.y2-3y+2=0
C.y2+3y-2=0
D.y2-3y-2=0
-
(2006•淄博)解分式方程
+3=0时,设
=y,则原方程变形为( )
A.y2+3y+1=0
B.y2+3y-1=0
C.y2-3y+1=0
D.y2-3y-1=0