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(2004•扬州)用换元法解方程(x+)2-(2x+)=3,则原方程可化为A.y2+2y-...
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(2004•扬州)用换元法解方程(x+
)
2-(2x+
)=3,则原方程可化为( )
A.y
2+2y-3=0
B.y
2-2y+3=0
C.y
2-2y-3=0
D.y
2+2y+3=0
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