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(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=0B....
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(2002•湛江)用换元法解分式方程
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)
时,设
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YII=
)
=y,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+3y-2=0
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