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如图,⊙O中,弦AB和CD相交于P,CP=2.5,PD=6,AB=8,那么以AP...
如图,⊙O中,弦AB和CD相交于P,CP=2.5,PD=6,AB=8,那么以AP、PB的长为两根的一元二次方程是( )
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A.x
2-8x-15=0
B.x
2-8x+15=0
C.x
2+8x-15=0
D.x
2+8x+15=0
考点分析:
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