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如用换元法解方程,那么原方程可化为A.y2-3y+2=0B.y2+3y-2=0C.y2-2...
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如用换元法解方程
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)
,那么原方程可化为( )
A.y
2-3y+2=0
B.y
2+3y-2=0
C.y
2-2y+3=0
D.y
2+2y-3=0
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