首页
(2004•海淀区)当使用换元法解方程时,若设,则原方程可变形为A.y2+2y+3=0B....
试题详情
(2004•海淀区)当使用换元法解方程
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIUAAAAjCAYAAAC6n8nPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
时,若设
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAjCAYAAADrJzjpAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF0SURBVFhH7VeLDYUgDOxk7MQ6LMMojNLXiiga
Py0QwTxJXnwmBc7juLaALx3wUtz4AX/65D7G/4NxbxEAEIzDMH2xR7t5v6eho1QCOmPQBQZtCbpu
dASOGJwh5vWg+RO7AifkaBa5vIhxT4wbYLnoQHdlnGViSdjewvSkP/EpHI9LhYGyo5hEc3IYDWqN
xif7Ev6EpFWFPc54FdpsMqSjW5NB1NvmvdVuDdeJjLMt7W63dymrNdyt4VKzVDh75bbk0e08Sqpv
jktDM0cTm9lhrBXSxQ7EtsKZGvIoX2qmh+uGGTjJxpZkBPmeTSI3wA0xbQtTcBM0ikUWQUZ3KSt4
FPvpQw+MI9M4OWBPFzlL9ymrHtQzEKiUX/St56PNjMs6Ze94cUtyobLqTIRY2umUABcBqAo67nSW
jH1Y/+R37YTxKkzCybedzpiMzyXFlc2OCvy20xkRuKjTGQ14daczJZ+1gcmbpPc2EkJjGC7sY/zp
I/kBGlO5os38nnQAAAAASUVORK5CYII=
)
,则原方程可变形为( )
A.y
2+2y+3=0
B.y
2-2y+3=0
C.y
2+2y-3=0
D.y
2-2y-3=0
相关试题
-
(2004•海淀区)当使用换元法解方程
时,若设
,则原方程可变形为( )
A.y2+2y+3=0
B.y2-2y+3=0
C.y2+2y-3=0
D.y2-2y-3=0
-
(2004•海淀区)当使用换元法解方程
时,若设
,则原方程可变形为( )
A.y2+2y+3=0
B.y2-2y+3=0
C.y2+2y-3=0
D.y2-2y-3=0
-
当使用换元法解方程
时,若设
,则原方程可变形为( )
A.y2+2y+3=0
B.y2-2y+3=0
C.y2+2y-3=0
D.y2-2y-3=0
-
(2003•海淀区模拟)用换元法解分式方程
+
-2=0,设
,则方程可化为关于y的整式方程为( )
A.y2-2y+1=0
B.2y2-3y+1=0
C.2y2+y-3=0
D.y2+y-2=0
-
(2004•本溪)用换元法解方程
+
+7=0,如果
=y,那么原方程可变形为( )
A.2y2-7y+6=0
B.2y2-7y-6=0
C.2y2+7y-6=0
D.2y2+7y+6=0
-
(2004•本溪)用换元法解方程
+
+7=0,如果
=y,那么原方程可变形为( )
A.2y2-7y+6=0
B.2y2-7y-6=0
C.2y2+7y-6=0
D.2y2+7y+6=0
-
(2002•湛江)用换元法解分式方程
时,设
=y,则原方程可变形为( )
A.y2+2y-3=0
B.y2+2y+3=0
C.y2-2y+3=0
D.y2+3y-2=0
-
(2002•湛江)用换元法解分式方程
时,设
=y,则原方程可变形为( )
A.y2+2y-3=0
B.y2+2y+3=0
C.y2-2y+3=0
D.y2+3y-2=0
-
解方程
时,如果设y=x2-x,那么原方程可变形为关于y的整式方程是( )
A.y2-2y-1=0
B.y2-2y+1=0
C.y2+2y+1=0
D.y2+2y-1=0
-
解方程
时,如果设y=x2-x,那么原方程可变形为关于y的整式方程是( )
A.y2-2y-1=0
B.y2-2y+1=0
C.y2+2y+1=0
D.y2+2y-1=0