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(2009•金华)抛物线y=(x-2)2+3的对称轴是( ) A.直线x=-2 ...
(2009•金华)抛物线y=(x-2)2+3的对称轴是( )
A.直线x=-2
B.直线x=2
C.直线x=-3
D.直线x=3
考点分析:
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