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下列方程中是一元二次方程的是A.ax2+bx+c=0B.C.x2=0D.5x2-6y-2=...
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下列方程中是一元二次方程的是( )
A.ax
2+bx+c=0
B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFIAAAAjCAYAAAAHUl3/AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.x
2=0
D.5x
2-6y-2=0
相关试题
-
下列方程中是一元二次方程的是( )
A.ax2+bx+c=0
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFIAAAAjCAYAAAAHUl3/AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.x2=0
D.5x2-6y-2=0
-
下列方程一定是一元二次方程的是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFMAAAAjCAYAAADokDbBAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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==
)
B.5x2-6y-3=0
C.ax2-x+2=0
D.(a2+1)x2+bx+c=0
-
下列方程一定是一元二次方程的是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFMAAAAjCAYAAADokDbBAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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==
)
B.5x2-6y-3=0
C.ax2-x+2=0
D.(a2+1)x2+bx+c=0
-
下列方程中是一元二次方程的是( )
A.5x2-6y-2=0
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFIAAAAjCAYAAAAHUl3/AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.x2=0
D.3x+1=5x+7
-
下列方程中是一元二次方程的是( )
A.5x2-6y-2=0
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFIAAAAjCAYAAAAHUl3/AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.x2=0
D.3x+1=5x+7
-
下列方程中是一元二次方程的是( )
A.x2=0
B.x2-5x=(x-2)2
C.
-1=0
D.(a-1)x2+bx+c=0
-
下列方程中是一元二次方程的是( )
A.x2=0
B.x2-5x=(x-2)2
C.
-1=0
D.(a-1)x2+bx+c=0
-
若(b-1)2+a2=0,则下列方程中是一元二次方程的是( )
A.ax2+5x-b=0
B.(b-1)x2+(a+3)x-5=0
C.(a-1)x2+(b-1)x-7=0
D.(b-1)x2+ax-1=0
-
下列方程是一元二次方程的是( )
A.ax2+bx+c=0
B.x2-y+1=0
C.x2=0
D.
+x=2
-
下列方程是一元二次方程的是( )
A.ax2+bx+c=0
B.x2-y+1=0
C.x2=0
D.
+x=2